back wheels

Derived from the shape of a tricycle, the back wheels are the testicles to the front wheel's penis

Whilst shagging a massive monster of a woman, I slipped the back wheels in.

by Secretive Jim January 13, 2005

back nine

Reference to the anus in regards to the performance of Anal Sex.

1. I played the back nine with my girlfriend last night.
2. I teed off on the back nine but she kicked me off the course.

by Wes Wylerson April 21, 2006

back tits

when a fat hog of a woman has rolls that droop over her bra strap in the back giving the appearance of titties

one time i put my erection in a bitches back titties and back tittie fucked her

by urexcellency May 16, 2003

Back Bush

The patch of hair on a man's lower back by his belt line.

Hey dude, you might want to think about shaving that back bush it's growing wild and mangy out of them jeans.

by El Jeffe de Chicago January 31, 2009

jump back

slang for "No Way!" or "Woah!"

Guy 1: Dude, Dan asked Katie out!

Guy 2: Jump back! I was gonna ask her out!

by Gina March 23, 2005

Back in Nam

Use this term after describing something you used to do, or before you describe something that happened to you. The phrase can be said just by itself if in the right context, to mean "Oh yeah we used to do that all the time"

"Hey remember when we used to always play poker on Wednesdays?" "Dude, Back in Nam"

"Back in Nam, I got raped by a sea monkey"

by Kid HAM August 17, 2012

Mattress Back

When a woman does not get off her back. Constantly has sex.

Marie fucks everyone. She's a mattress back

by Fingers9705 October 18, 2008