Slap Milk 

To Slap milk is to take a big bag of milk and slap your sexual partner in the face with it.

Jessica really wanted to slap milk with Kenny.

Slap Milk by ConLandfartface December 17, 2008

Milk slap

The jocular act of hitting someone in the face, usually gently, with a cold, plastic milk bottle. The bottle is generally at least 6 pints – large enough to cover one side of a person's face.

This action often just cools the victim's face in a pleasant way, rather than actually hurting them.

It's a milk slap, L.B.!

Milk slap by Kokapetl January 19, 2009

Milk slap

When you nut in your hand till it fills halfway than go up to someone and slap them as hard as you can with the nut hand

Guy 1: Yesterday I gave my girlfriend a milk slap!
Guy 2: what happened?
Guy 1: she left me.

Milk slap by Samuraignome June 4, 2023

milky slap 

When one slaps his ejaculated penis in another's face smearing cum everywhere.

Dude, I totally gave your sister a sloppy milky slap last night.

milky slap by Ryan Huie February 13, 2005

milky slap 

The act of slapping one in the mouth with a penis after the mouth has been filled with ejaculate.

Randy's leg looks like somebody just gave it a milky slap.

milky slap by Wes February 14, 2005

I'm gonna slap you so hard that you'll leave the milky way galaxy 

When you slap someone so hard that you make them enter a different galaxy

Guy 1: I'm gonna slap you so hard that you'll leave the Milky Way galaxy.
Guy 2: Haha, no. You can't do tha-
Guy 1: *slaps Guy 2*
Guy 2: *escapes Earth's gravity*

I'm gonna slap you so hard that you'll leave the milky way galaxy by Supertrain12 November 4, 2019