Hmm. Hasn't happened very often. Mainly, I'm the guy with the biggest cock in the room, but I only think about because other people make a big deal out of it. My ex-wife hated to be fucked by me; hurt her cervix. But in my post-marriage gay life, guys seem to love it. Never been deep-throated for more than a second. I love getting fucked, any size is fine by me; but when I top, some guys have a tough time getting into the pounding I like. Others just lap it up. Best is when a guy is scared and timid at first, but then really gets into it.