Backachingas

A females mammary glands (boobs/ tits)

DDAAMM!! Look at her backachingas!!

by B0$$ of the B0$$'$ August 25, 2009

Backpack call

an accendental call when your phone is in your backpack

"ring""ring"
mom "hello?"
muffled teacher " no billy that is wrong"
mom "damn it another backpack call and billy is getting answers wrong."

by ankercod November 5, 2009

backdating

When you date your ex out of desperation, boredom, guilt, or displaced regret.

I thought you and Cindy broke up a long time ago.

Yeah, we're just backdating.

Oh, cool, that sounds like a healthy life decision.

by UrbanLexicologist April 6, 2010

Backpack Learner

A student who attends the beginning of class, but regularly takes off to "the bathroom" for ten-twenty minutes at a time, as if the backpack is going to do all the learning for him/her.

I always email my instructor at the last second to ask the most basic question because I'm a clueless backpack learner.

by barefootgirl March 7, 2011

Backhammer

When a guy spits on a girls back in bed so she think he cum on her and when she turn around he cum in her face

Hannah: so u guys did it last night
Lauren: ya but he freakin backhammered me!
Hannah: oh that's disgusting!
Lauren: I know! Who even thought of backhammer?

by Sexy;) June 30, 2011

backpack rule

It's getting harder and harder these days to determine whether or not a girl is old enough to be checking out. Girls from ages 15-21 can all look the same these days. If a girl is wearing a backpack(like a hello kitty one), chances are she's too young and you should look away before being called out for being a creeper. If she has no backpack than it's safe to look, but still be cautious if you choose to engage in conversation.

Benji- "That girl is cute but she looks like she might be young."
Joe- "Gotta use the backpack rule."
Benji -"What's the backpack rule?"
Joe- "If she's wearing a backpack she's too young."

*Hot girl walks in*

Joe- "See man, no backpack... she's fair game!"

by thanks babe March 29, 2012

Backfat Horror

When all of a sudden you turn around and a giant tsunami of rolled squishy flesh is in your face and you try not to vomit and defecate yourself as you run screaming in the other direction

Guy 1- Dude i totally had backfat horror yesterday

Guy 2- I am so so sorry D:

by S3v3n December 29, 2012