a) A pair of underpants referring to any variety- including but not limited to briefs, boxers, thongs, boxer-briefs for either a male or a female. Short form: Bundys
"I'm very happy that I wore my lucky bundy-bunkers today."
Belly Buckers- a game in which a person stuffs a pillow in one's shirt and runs into another person (who also has a pillow stuffed in their shirt) for fun.
1. Josh and Ben played Belly Buckers because they were drunk and had the urge to run into each other.
2. Josh and Ben were Belly Bucking(verb form) in the living room