A fork of Rural Dictionary
verb. To impreagnate a woman; usually occuring during intercourse where some form of contraceptive is used.
Dude, that sucks. I heard you slipped one past the goalie.
To fuck the chick in the ass and for the cum to seep out of the bum hole into the vagina
Friend: I heard you slipping one past the goalie during anal sex Guy: Yeah, Sheila is pregnant now.
To successfully have sexual intercourse with a woman who has told you no. (Rape)
She told Brian she didn't want to have sex last night, so he tried to slip one past the goalie.