A pair of knickers so big and unsexy that you could never dream of pulling on a night out. Typically these huge knickers cover your whole belly and your arse cheeks.
Stacey “I’m so excited for this night out, I’ve got my best underwear on, I’m so going to pull”
Caroline “you’ve got no chance with those bellybashers on, they’re hanging!”
To whine in an aggressively-manipulative manner to try to pressureothers to do your bidding.
The local rioffraff can bullyache to me all they want about needing emergency cash for some family-crisis --- I am NOT shelling out my hard-earned money just so that they can get their drugs or go on shopping-sprees!
What your get BUTT eventually develops from being repeatedly BUTTED by one or more male members of da "best BUTTER in America" species.
It's said dat goats aren't actually born with a strong urge to use their scalps as battering-rams for your posterior; it's a learned trait from having humans playfully pat or push on their heads when they're small. So simply refrain from such "encouragement to engage" behavior if you don't want major billyaches later on.