Backseatsman

A creature who thrives in backseats of things, especially cars. He can get along just fine on the back of a bike, though.

A creature made up by The Lonely Island

Driver: There's something living in the backseat of my car!!

Passenger: It's just a backseatsman...

by CapnNorric July 13, 2010

backside trots

Synonym for diarrhea. Excessive and frequent evacuation of watery feces.

The stomach flu gave me a serious case of the backside trots. I was running to the toilet every 5 minutes.

by Robert Moto July 7, 2006

Backside baby

A girl who looks good from the back but is ugly when she turns around.

She is a backside baby

by Billy baby May 13, 2008

backsmack

action verb: To strike another person because they have just pissed you off. One can backsmack by thought, word, or deed.

Steve: "Did she just cut you off?"
John: "Yeah, I 'd like to backsmack her!"

by Lexie 1912 November 1, 2008

Backseat Mouse

Like backseat driving , telling somewhere what to do and how to do it while on the computer. Can be very annoying.

Chris: And you're gonna click over there, then-No no no! Click right there!!

Paul: Man, stop backseat mousing me, I know what to do.

Lindsay: John is so controlling!

Bill: We all know it, whenever I'm on the computer, he backseat mouses me all the time, he needs to chill!

by NeoHippie August 13, 2010

Backseat Nigga

A member in the crew who isn't really part of the crew. A backseat nigga drifts in and out

"Aye man, where's trey?"
"He's out with another crew"
"Oh, he's the backseat nigga, huh?"

by Versace Man June 5, 2014

Backside Misty

When you are sitting on the toilet and you fart so hard forcing the water up and splashing your ass

I had the shits last night, and I gave myself a Backside Misty

by TheBacksideMistys October 10, 2016