Yeah, I just remember my first girlfriend, before we ever had sex or anything, she'd give me head and I'd never pull my balls out, I'd just have my dick out of my fly...eventually my girlfriend was like "Why don't you pull your pants all the way down? I've never seen your balls", so I pulled them out and she was like "Wow, you have really big balls!" We laughed about it for a little while and then continued our sexual things.
I remember a few months later, I was hanging out with her, her friend and some other people. This was after we broke up. Her friend secretly kept trying to get with me but I still had feelings for my ex and all that bullshit. Anyway, we were all hanging out and her friend asked me something or said something to me (don't remember) and followed it up with "..plus I heard you have big balls" while looking down at my crotch. I kind of blushed laughed awkwardly (I was very awkward at the time) while the ex covered her mouth and laughed/"omg"ed in a "shit, you weren't supposed to say that" way. lol.
It's good to hear lots of people here like big balls. I have a slightly-larger-yet-still-average sized penis so big balls just give it more "umph", I guess!