A fork of Rural Dictionary
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.
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
The appearance of your ass crack eating up your pants and any under garments.
i.e. the pants are being pulled into the crack at an alarming rate.
Whoa sister - you need to walk slower or buy bigger pants - you got some serious hungry bum!
Also known as a wedgie, where the underpants are drawn/forced/pulled/slipped up into the butt crack.
That hungry bum they gave Clarence in gym class left a big skid mark on his gauchies.
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!
when you don't wear underwear and your arse eats your pants.
man that chick has hungry bum
When a persons lower clothing rises up into their bum crack.
Friend 1: Look at that bird's arse.
Friend 2: Haha! Hungry bum