Sloppy seconds?

Hi!

Did anybody here get to experience a sloppy seconds fantasy? I'm getting hard just to think of putting my penis in a cunt full of another persons cum but would probably never dare to try! It just couldn't be with my girlfriend lolll

If anybody experience such a thing, I'd like to know how it feels, how warm and easy to fuck it is with that "deluxe" hot lube ;)
Thanks!!!