Slang used for the Marine Corps by Marines only. No one knows when it started. Very popular during and after Vietnam.
by Michael in New Hampshire March 10, 2006
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To suck in your stomach, raising your shoulders. Makes you look thinner
I had to suck it in when those girls walked in so they wouldn't see my beer belly.
by genrippz October 22, 2005
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suck-full, crappy, shitty, can also be the opposite of successful, full of suck as in a big bag of suck.
That pizza was suckful it tasted like shit.

Jim, watching you play golf is like watching someone throw up. You should stop playing for two weeks and then just quit altogether. You are suckful.
by mark gonos February 12, 2008
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something you would say to someone when they have a misfourtune.
someone would say to a guy (whom they don't like) who's had a accident "ha ha sucked in"
by bread infection January 2, 2006
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Not good. Bad.

The early Jazz musicians would say that a guy could really "Blow" if he had a good sound when playing the horn. If he couldn't play very well then they would say that he was "Sucking" on that horn. That's where the term "Suck" as being something bad came from.
He plays that horn so poorly that he must be sucking on it.

He doesn't blow, he sucks.
by Don Kotas August 6, 2004
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(verb)
Using your mouth muscles to vacuum something.
to suck a shlong
by Kaz00 June 17, 2022
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