backsack

The part of a man no one should ever have to see. More specifically, the back of a man's scrotum.

Dude, when I was in the locker room today I totally saw some old guy's wrinkly backsack.

by JohnC7 February 16, 2008

Backsack

to view testicles from behind usually caught on camera upon showing your friends your arse and leaning a little too far forward

On reviweing holiday pics:
"that was when you got your arse out, whats that dark patch between your legs?"
"backsack"

by Dr Diddy January 21, 2009

backsacked

when someone flicks you in the sack from behind

I got backsacked
from my girlfriend when i stood in front of the tv

by kevin oneill January 16, 2006