Another pair of my dads underwear: if anyone’s interested he’s in his early 50s and a construction worker, he works away from home a lot so all his underwear and clothes are thrown in the washing basket when he comes home after a week… safe to say he’s been keeping himself occupied
 

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Brothers undies are always musky and smelly , ha ha
You’re not lying. I went on a trip with my brother in law and we spent the whole day fishing. It was the hottest day that year so we were all working up a sweat by just being outside. I let him take a shower first so that I might have a chance to see what he smelled like. I found his underwear in his bag in the bathroom soaked with his sweat. I smelled numerous guys’ underwear before but none smelled like his. It had more of a classic armpit BO scent mixed with ball sweat. I’ve never smelled such strong armpit musk on a guys balls and taint area. I sniffed and jerked off until I found myself sucking the sweat out. It was salty. I ended up busting a load and putting them back. To this day every time I see him I always think about how I know what his most intimate areas smell and taste like.
 
A couple of years ago, I went with a buddy and his family on a week long vacation. We rented an Airbnb and had an entire house to ourselves. My buddy and I shared a room, his sisters and their partners each had a room to themselves and the parents had the master room of course.

On our first night there, we all gathered in their room to talk and just hang out. Well, I had to use the bathroom and they just so happened to have an en suite. As I walked in I spotted the boxer briefs my buddy’s dad wore on the road trip there. It was a long 10 hour trip. I couldn’t help myself. I took a sniff and it was glorious. Smelled sweaty and a bit musky, but clean. I don’t know how to describe it other than that. A true man smell, but clean.

I, of course, immediately began to jerk off with them over my face. Ended up cumming pretty quickly. I shot my load into the toilet, but wiped the last drop on his undies. I then returned them to the pile of his clothes.

This went on pretty much every night. I’d even walk into the room while he was showering and then the bathroom as soon as I got out, hoping they’d still be warm from his body.

By the fourth night I was beginning to think he knew what was going on. His underwear would be on the very top of the clothes pile. Well, one night to decided to place them under his clothes once I had my fun.

On the final night, his (and only his) luggage was in the bathroom with a fresh pair of used undies on top. I immediately began to look for more of his undies, it didn’t take long. He’d managed to separate all his undies to one side of the bag and the rest of his clothes on the other.
I laid on the floor covering myself in all his undies sniffing the most recent pair.

I think about it often. Gets me hard every single time. I still see him from time to time. He still wears the same underwear to this day. lol
 
A couple of years ago, I went with a buddy and his family on a week long vacation. We rented an Airbnb and had an entire house to ourselves. My buddy and I shared a room, his sisters and their partners each had a room to themselves and the parents had the master room of course.

On our first night there, we all gathered in their room to talk and just hang out. Well, I had to use the bathroom and they just so happened to have an en suite. As I walked in I spotted the boxer briefs my buddy’s dad wore on the road trip there. It was a long 10 hour trip. I couldn’t help myself. I took a sniff and it was glorious. Smelled sweaty and a bit musky, but clean. I don’t know how to describe it other than that. A true man smell, but clean.

I, of course, immediately began to jerk off with them over my face. Ended up cumming pretty quickly. I shot my load into the toilet, but wiped the last drop on his undies. I then returned them to the pile of his clothes.

This went on pretty much every night. I’d even walk into the room while he was showering and then the bathroom as soon as I got out, hoping they’d still be warm from his body.

By the fourth night I was beginning to think he knew what was going on. His underwear would be on the very top of the clothes pile. Well, one night to decided to place them under his clothes once I had my fun.

On the final night, his (and only his) luggage was in the bathroom with a fresh pair of used undies on top. I immediately began to look for more of his undies, it didn’t take long. He’d managed to separate all his undies to one side of the bag and the rest of his clothes on the other.
I laid on the floor covering myself in all his undies sniffing the most recent pair.

I think about it often. Gets me hard every single time. I still see him from time to time. He still wears the same underwear to this day. lol
I also smell my father in laws used underwear every chance I get. I’ve gotten to them about 3-4 times now. The first time was after he had gotten done playing tennis. I swiped them from the sweaty shorts and shirt he rolled them up in. They were soaked and still warm with his sweat. He must have played pretty hard because they were extremely ripe in the ass area and had a strong piss smell in the front pouch. The other times weren’t as strong, but still great. He has that classic dad next door that’s been doing work around the house all day sweaty ball musk. Honestly out of everyone I’ve ever hooked up with or smelled his scent is the best I’ve encountered.
 
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For me it wasn't sniffing my Dad's underwear but wearing them. All I ever actually saw him wear were briefs that had a large, loose spot in the crotch. He had a thick, uncut flopper on soft and I saw it several wonderful times. But.. I found his old, full cut, pastel colored (and white) snap front boxers that for some reason turned me on. I wore them many times, even on dates. I think one thing that turned me on was the feeling of having nearly no underwear on due to the boxers being full cut and the fabric being so thin. The snaps really turned me on, as I remember my ex (girlfriend) just unsnapping them (not taking them off of me) to play with my dick in the car when we'd go parking.

To this day I still overwhelmingly prefer boxers under loose crotched khakis. When my dick hangs just so, the mental aspect of the bounce and freedom is so manly and euphoric.

Love it.
I totally agree. I loved the feeling of space when I put on dad’s briefs. Did you ever grow to be a similar size? Dm me if you want to chat