A number of times I've been with an uncut guy, and had to tell him to go to the bathroom and have himself a quick wash.
stink and smegma. bleh
(funny how people get so up-in-arms about foreskin.... If you're gonna have it, ya should wash as much as it requires you do to be clean. Otherwise, I've got no sympathy for the foreskin pride folks)
I've had an experience with someone trying to climb on without having prepared beforehand. He didn't manage it, since he decided to try without lube... but the point is that I was POWERFULLY turned off to see brown on the condom.
*shudders*
Pressing the flesh should be just that.... flesh. Filth, feces, and funk should not be in the equation.
Nothing disgusts me more. Except maybe zoophilia, necrophilia, pedophilia, and such.