Cracking Back

Having vigorous anal sex, so hard that it results in the spine dismantling, and therefore, cracking the partners back.

Dude, I love cracking backs and putting my partners into full body casts.

by Old man Jenkins January 25, 2015

back of a bus

Ugly, eg "Face like the back of a bus".

Hes got a face like the back of a bus

by oracle March 12, 2004

Back Rub

Started by a porn website, a back rub is when a woman/ gay man asks the man to give her a back rub, but means hold her back as they have anal sex.

The woman rolled onto her back and asked for a back rub.

by FantasticFourFastics August 5, 2014

double-back

A technically advanced manouver involving swinging your nuts and nob back and forth and when they are on the way back you (gently) close your legs leaving a fruit salad at the back and a mangina at the front... ("look m'a no hands!")

Refer one of Jackass volumes (dont remember which one)

by Midget October 11, 2004

backed-up

Strong and muscular.

That teacher, he be backed-up.

by Strongboy August 6, 2008

stabbed in the back

getting screwed from behind

"I was in his office, things got steamy, and then I got stabbed in the back for 2 hours"

by Kakarot73 November 8, 2013

donkey backing

when administrating anal sex a swift punch into the back of the head of the receptor results in the tensing of the sphincter muscle causing more pleasure for the male

i donkey backed this bird last nite and split her head open
i love donkey backing connie wot a tight arse

by flied lice u plik August 17, 2006