When the fabric of your clothes is sucked between your bum cheeks creating the outline of your crack...
Simon: Yo dude, look at that girls arse...
Stu: That sure is one hungry bum!
by mcsaf October 18, 2011
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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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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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To have a throbbing want or need for anus.
Facinated or obsessed with arse.
Signs that one is BUM HUNGRY:

•Will attempt to steer conversation to shit, farts or anal cavities at any opportunity
•Has butt related websites at top of 'favorites'
•During sexual encounters, will waste no time in attempting to put fingers, penis or inanimate objects in your arse
by Luci Lockette January 28, 2006
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Commonly known as "BHS" bum hungry syndrome refers to the knickers of a male or female once they have ridden up into the cheeks of the buttocks.

The term "bum hungry syndrome" derives from the idea of your arse being so hungry it has actually stared to eat your pants...
BHS is frequently caused by ill fitting underwear, specific breeds of underwear cause chronic bum hungry syndrome, so much so that it may mature into "starving bum syndrome" these pants include: girl boxers, high legged briefs and the notorious laced pants. A note for those trying to avoid BHS...ironically pants purchased from the shop "BHS" (British home stores) do not cause the disease, though ones bought at Primark do (speaking from personal experience!)

In serious cases when the knicker-line of the BHS is visible from the outside of your clothing, it is at this point that the BHS must be ejected. One advises you walk quickly to an uncrowded area and do the deed, as it were.

Girl: "sweet jebus! Look at the BHS on her!"

Old man to a comrade: "dude, you think here ass it hungry?!"

Perturbed dog: "woof...that is some bad ass Bum hungry syndrome you got goin’ on there my brutha!...woof"
by happy teapot April 19, 2007
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