slap it in

to inject or penetrate a penis into a vagina

Chad: "So, on your date with Mrs. Heath, did you get to slap it in?"
Kurt: "No, her beef curtains got in the way"

by Stee April 29, 2003

put that in your back pocket and slap it

The comeback after a comeback which pretty much ruins what you had going.

person 1: Suck my dick
person 2: You better grow one first

~RANDOM "OHHHH"'s AND "BURRRRNNN"'s~

Person 2: Put that in your back pocket and slap it bitch!
Person 1: Whaaat?

by shaun white is a hotiee May 22, 2006