Backcracksm

The act of cracking your back so hard you orgasm.

"Michael cracked his back so hard in English class he backcracksmed"

Backcracksm by allshamnowow December 4, 2013

backcrack

A butt crack that extends above the waistline sometimes even to the middle of the shoulder blades.

Man JD has a bad case of backcrack!

backcrack by superknox1andonly December 22, 2014

Backcracker 

When you take such an enormous dump that it cracks your back as it leaves the body.

Man, that was a backcracker… great dump!

Backcracker by Repanoodle June 6, 2025