It takes me forever to cum, so I expect the bottom to get off first. Some bottoms view this the other way around, and think it is their duty to get the top off. Once, after pounding this guy forever, I hear this weak voice "Sir? Sir, are you going to cum soon? I can't take much more of this!!!" To which I had to explain that I've been trying hard to fuck the cum out of you for the last 45 minutes, am wondering what's taking so long, and please pleasure yourself, which was followed moments later by a wet explosion. I rather like making guys cum.
Most guys cannot tolerate being fucked for at least a while right after the cum, and often jump off or push me back right after. Other ones can continue being fucked, some need it gently for a while, others you can go right back to pounding, and some will cum again. One of the most amazing multi-cummer bottoms I've ever fucked does porn, Ryan Cummings (I first met him when I did a gangbang video.) He can cum again and again, being fucked constantly the whole time. (Although he prefers to be filled, rather than cum himself.) He cums very hard; he's told me that I'm one of the few guys that can manage to hold my cock inside him when he blows, most guys get pushed out by the force of his orgasm. The most amazing multi-cum performance was when we fucked in semi-public at one of the Magnitude parties in San Francisco. He was on all fours, balanced on this very odd bench (really just two rails) and I'm plowing him from behind. When he came, he would rear up on his knees, and I'd put my arms around him to steady him. My cock still in him, he'd blast a couple of big squirts, his whole body surging, then drop back down on all fours, and I'd continue pounding hard. It got to the point that about every dozen of my thrusts, he'd rear up and shoot again. And I mean shoot, not dribble, a couple of big ropes. I think he came about ten times before he made me stop. He said he was dehydrated, and needed water badly. No wonder, between all the sweating and cumming...