Smash your back end out 

To have hard, vigorous sex with a person.

John: "I'm gonna smash your back end out."

Smash your back end out by The Galavanters February 26, 2010

Smash Ball 

The action of having sex with someone for the first time. The people involved do not have to be virgins, but to call it a Smash Ball they must have not had any sexual experiences with eachother prior to te encounter. The name comes from most prized item in Super Smash Bros franchise. In the game, getting the Smash Ball allows you to use a killer move that will most likely allow you to win the game.

Hey bro, did you get the Smash Ball with Alyssa yet?

Smash Ball by Anonymous Pickle November 19, 2017

smash 4 

The Best smash Port ever in Existence.

Person 1: “Hey bro you wanna play Smash Ultimate?”
Person 2: “you mean Smash 4?”

smash 4 by JTH262626 February 11, 2019

Smash and Dash 

to have sex with someone then leave soon after .sometimes to never see them again, nature of "1 night stand"

whats up bro? im about to smash and dash this gal, I just meet at the club.

Smash and Dash by boski October 17, 2006

Smash Bros 

When two brothers related by blood have sex with the same girl.

Bro 1: "Hey, did you fuck my ex Emily?"
Bro 2: "Yea, what about it?"
Bro 1: "That means we're Smash Bros now."

Smash Bros by Dr.Klyp January 5, 2020

smash cheeks 

1.The act of waxin that ass to perfect.2 Premeditated assault of that ass by any means necessary 3. Goin straight H.A.M on the pussy.

Example: After a short conversation you take a bitch to your,hers or anyone's crib for that matter and smash cheeks! It doesn't really matter how it goes down as long as it goes down by any means necessary and your games on point. the hoe or hoe's(if u go hard) must be down! The more ppl who see or hear it the funnier it is in the morning and more cred is awarded. Let the games begin.

smash cheeks by Drake and B February 21, 2011

Smash Mouth 

getting head from a girl, a blow job, completely owning a girl's mouth with your dick

dude i got the best smash mouth from a sorority slut last night

Smash Mouth by Matt the frat March 12, 2008