longest time I've spent sucking on a guy was 45 minutes. I love giving no recip head to a guy, like to edge a guy with my mouth, I'm a total cum slut, edging a guy can help build up a nice big load. As much as I like sucking cock, my urge for the load kicks in at some point and then I'm all about getting the reward, and my desire to suck switches to my NEED to swallow. It's usually 5-10 min before I'm begging the guy to cum and feed me. The 45 min guy was a hotel hook up, married guy, told me he liked being sucked for a long time, like an hour, so I knew going in I was in for a challenge. He wasn't kidding, Nice 7" cut cock, I sucked, licked and throated him for 45 min, when he'd get close he'd pull his cock back and tell me to give him a min. Then he'd put his cock back in my mouth. It was worth it, was so hot and he delivered a great mouthful.