blow smoke up one's ass 

Tobacco Smoke Enema (1750's-1810s)
The tobacco enema was used to infuse tobacco smoke into a patients rectum for various medical purposes, primarily the resuscitation of drowning victims. A rectal tube inserted into the anus was connected to a fumigator and bellows that forced the smoke towards the rectum. The warmth of the smoke was thought to promote respiration, but doubts about the credibility of tobacco enemas led to the popular phrase “Blow smoke up one’s ass.”

I don't trust him, he's just trying to "blow smoke up one's ass".
Oh don't believe him, he's just blowing smoke up your ass!

blow smoke up one's ass by Chafu August 18, 2009

Isn't worth the powder to blow 'em up 

The kind of person or group of persons who are actually worse than worthless. So much so, that as you contemplate canceling their ticket, you are forever mindful of how expensive a pain in your ass they have already made themselves. Oh to be sure, they gotta go, but as cheaply as is humanly possible so you can recoup at least some of the loses they have cost your ass.

Ya know somethin' Phily? There aren't enough aspirins in the entire aspirin taking planet to make the headaches go away like this mamaluke's been makin' for me... an' yet, he isn't worth the powder to blow 'em up. I want him gone-all-day-long, like yesterday. Understand? ...but we gadda make this on the cheap as much as is freakin' humanly possible. Do I make myself clear? Marone!This chiseling wastling degenerate cock sucking madda fuck! Oh, he's gone. Right the fack now.

Isn't worth the powder to blow 'em up by Lieutenant Frank Columbo March 11, 2020

Blow it up 

A celebratory gesture which builds upon the pound it, meant to replace the high five. To "blow it up" you simply pound fists and while retracting from the pound both parties open their fists quickly while making an exploding sound.

Jason Statham just gave another punk the hard 20. Blow it up!

Blow it up by J Kotula December 13, 2008

Ain't worth the powder to blow them up with! 

Gun powder is cheap and thieves, and the like aren't worth wasting the cheap gunpowder!!

like those types of people aren't worth the energy or time it would take to waste the powder "Ain't worth the powder to blow them up with!"

Ain't worth the powder to blow them up with! by staggerlee August 4, 2009

Blow'd Up 

A $200 million movie extravaganza starring Anna Nicole Smith as a rogue officer out to stop a mad bomber.

This summer, everything will be... Blow'd Up.

Blow'd Up by thashiznit October 3, 2007

blow it up 

the act of pounding a closed fists, between friends, that ends with all of you fingers being fully extended, between both parties.

" Alright dude, see you later, blow it up."

blow it up by Brendyn Adams April 15, 2008

blow it up 

(V.) to take a shit, especially a big ol' nasty one

Oh I ate too much food, I'm gonna have to blow it up when we get home.

blow it up by Crizzam December 3, 2005