Noun.
Hungry bum, is a state that your bum goes into. Essentially, it is when one's ass hole tries to swallow that person's undergarments. This state can aslo happen (in some cases) where there is execcive bum hair. The ass hole attemps to devour the hair.
<dude> holy shit man
<man> WHAT!!!
<dude> That milf over there has got a hungry bum eating her whole fuckin bathing suit!!!
by G-Unit and Playa<k> March 24, 2005
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When women (or men) go commando or wear thongs and their pants are pulled into/eaten by their bum crack.
Steph must be going commando, she's got a seriously hungry bum.
by Leggingsaren'tpants April 24, 2011
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The act of a womans or mans underwear or bathingsuit getting swallowed by their buttox. In worse situations it may be referred to as a starving bum. Usually this happens for larger ladies that wear too small of bathinsuits because they think its attractive to look at cottage cheese.
<duDe> OMG@! look at the hungry bum
<man> yea dude, her fucking ass swallowed her whole bathingsuit
by Gito April 12, 2005
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When a person's pants/jeans/shorts are riding up the butt in an unattractive fashion requiring a "manual release" of sorts - usually happens to overweight women (but not exclusively). It looks like the bum is literally eating the pants.
Jason: "Check out the hungry bum on the chick in white pants."

Sam: "Yikes, that's just wrong."
by Hockey Mom March 3, 2010
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When the underpants you are wearing are riding up your backside and therefore being "eaten"
"Man I have a terminal case of hungry bum" she said as she dug her underpants out of her bum
by nuttybar June 6, 2007
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This occurs on hot, sweaty days when you suddenly realise that half of your underwear has crept up your arse and you have to drag it back out, as in:
Guy1: Dude, what's up, you're squirming.
Guy2: Aaaargh! It's Hungry Bum Syndrome.
by Funk October 14, 2004
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When a homosexual man hasn't had sex in a while, and it leads to him getting depressedm, he has the hungry bum blues
Man, Adam hasn't gotten any for so long, I think he's starting to get the hungry bum blues!
by the hungriest bum August 22, 2011
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