It is when your penis is inserted into a womans vagina and she can't feel any thing.Or when your dick keeps falling out of the womans vagina.
Amanda - Is it in yet
Chris - yeah im about to bust
Amanda - Are you serious i havent felt anything yet you have a small dick
Chris - Well im done, ive had my fun
Amanda - Well i dident i need a bigger man like richie, he never falls out