Oh my god, yes! When I was (briefly) polyamorous, and enjoying dating widely, I hooked up with an old friend I’d had the hots for in college but we’d never “gone there”…well, we didn’t this time either, because when we got to the bedroom and I produced MY supply of condoms for him to choose an appropriate one, he was all, Oh, um, well, see, I’m not circumcised, and condoms just don’t work for me, they just roll right back off, and, um…

He was completely astonished that we did not end up having intercourse anyway.