Fat back

When you hit somebody’s back with your hand cupped and it make a loud ass noice

*hit back* **smackin sound** damnnnn juicy back(fat back) ass

by Fatbackass May 12, 2019

sausage back

Where the dick is hard and your sitting in a bubble bath with your partners back up against your shaft.

Taking a sausage back with Gary

by Franknjoseole December 19, 2017

back gains

Muscle gains on your back.

My back gains recently started showing

by A.G.T.S. June 16, 2017

Sack in the Back

When a person places their scrotum between the ass cheeks of another.

Bro 1: Hey bro, can put the sack in the back
Bro 2: I would love your scrote between my cheeks!

by LlihTter November 6, 2017

Vine’s back

Say this in random situations to break the ice.
Or say it when something good happened as a follow-up response.

*Something pleasant happens*
You- “ Oh I guess vine’s back”

by samandrade November 28, 2017

skittle back

When a persons scapulars on their shoulders are shaped as skittles and stick out.

Beefan has a skittle back.

by SkittleBack1145 March 3, 2017

Back Taco

noun \ˈbak ˈtä-kō\
A synonym for the anus.

"I took a really big shit and hurt my back taco".

by UndeadWhiskey August 28, 2013