A colloquial expression, usually used in (but not limited to) Australia and similar/English speaking nations, for the process of defecation. Generally associated with humans and other humanoids, this phrase can be also be used to describe the defecation procedure of other animals eg. the family pet. A similar, slightly less descriptive version is the phrase back one out. Note that the word greaser has a wide range of usage in other contexts.
I really need to "back out a big greaser"
Watch where you step mate, I just watched Fido "back out a big greaser"
When I wake up I usually need to "back one out".
by pc0000001 June 28, 2010
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Southern term named for one Mr. Bottoms, known throughout these parts as one who will, with 90% certainty, back out of a previous committment with the boys to attend to matters concerning a)his woman, b)more distinguished persons.
Dude 1: Yo, is David still coming over to watch the game?
Dude 2: Naw shawdy. He says he has to stay home and make a big bow for some present he got his girl.
Dude 1: Big suprise. Back out Bottoms strikes again.

Dude 1: Where's David? We told him to be here 2 hours before kickoff.
Dude 2: Back out Bottoms decided to go tailgate at the snooty Alumni House.
by George P Burdell January 31, 2005
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(slang, vulgar) To have sex with someone so intensely that they experience physical or psychological effects afterwards, such as difficulty walking, altered mood, or altered perception of reality. Usually implies that the person who blows the other’s back out is very skilled or well-endowed. Often used in a flirtatious or humorous way.
1. Rachel: "Oh, girl, you won't believe it! He didn't just blow my back out; now I walk like I'm auditioning for a wacky walkathon!"
Emily: "Well, that's one way to leave a lasting impression!"

2. Sam: "I think I might have met someone who can really blow my back out."
Jake: "Is that why you've been practicing your unexpected interpretive dance moves?"

3. Nina: "His Tinder profile says he's a professional 'back-blower.' Is he some sort of chiropractor?"
Lori: ("This is too good to pass up!") "Oh, no, Nina. Brace yourself for a guy who can blow out birthday candles from a mile away! 😄"

4. John: "I heard they broke up after that weekend trip. What happened?"
Lila: "Rumor has it, he tried to blow her back out, but it was just too much for her."

5. Melissa: "So, did he really manage to blow your back out?"
Lisa: "Oh, he tried, but he couldn't even make it through a round of 'Happy Birthday' without running out of breath!"
by Anonymous23326 August 22, 2023
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it's actually a warning of a great fuck session that one is about to enjoy from a voluptous woman. Skinny women cant do it...you MUST have tits and ass and a lot of confidence; usually comes from either married or divorced women in their thirties, better known as VIPERS.
were going to fuck so long and hard that I'm going to throw your back out...
by VIPER1 June 27, 2008
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When a guy gives it to a girl so hard her back hurts.
Man that girl over there is so fine. I whispered in her ear and told her im going to throw your back out tonight.
by gesshowmanyarethere December 30, 2008
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(n) this is the result of excessive anal plundering; the intestines actually exit through the anus, forming a dangling mass, resembling a pink sock.
When I left prison, I had a back pocket hanging out the size of Texas.
by xwingkatieY June 13, 2012
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