back that ass up

when a girl puts that delightful arch in her back, and sticks her ass out in a erotic/sexually suggestive manor, often accompanied by a "booty dance", that brings shear delight to the males species.

"did you see her back that ass up, playboy? it almost brought a tear to me eye, and a 2x4 to my pants!"

"did you see lucy liu bending over in the drive-thru scene in charlies angels?? ddaaaaaaaaamn, it was delightful! that the essence of female perfection!"

by deluks December 28, 2005

back the fuck up

Threat suggesting that the enemy should leave or be quite. The enemy may take the advice (see punked) or disregard the advice (see toe to toe or fight).

"I've got a bat with your name on it. Best for you to back the fuck up."

by Beedub January 31, 2004

back the trolley up

To tell someone to hold on, or tell them to reconsider their last statement.

"damn she's hot!"
"back the trolley up man, she's got absolutely nothing going for her."

by Scott DeBoer October 9, 2007

back that ass up

1. Back the fuck up. Get out of my face. Calm Down
2. Insist a female shake and rub her ass against you when dancing.

1. Damn nigga, back that ass up before I get crazy up in here.
2. Come here girl and back that ass up for me.

by Phatty Mcgatty March 28, 2004

back it up like a Tonka truck

To back it up and get down.

An ancient saying, originating in Mesopotamia, recently reintroduced by rapper Pitbull in the song 'On the Floor' by the Jennifer Lopez.

Moments after entering the club, Matthew backed it up like a Tonka truck.

Joseph ordered a root beer at the bar, then proceeded to back it up like a Tonka truck.

by grandmaster_phag June 28, 2016

back the fuck up

What we told Japan to do but they refused so we nuked the shit out of them

President Truman: Japan better back the fuck up
Japan leader: fuck no
President Truman: ok then, boys prepare the atomic bomb

by applealex December 2, 2009

our backs are up against the wall

When you are in a difficult situation in a lifetime with emotional distress.

We're desperate. We have no where to go. We have to fight our way out of this, confront what is in front of us. Our backs are up against the wall.

by alkinizor March 22, 2011