The visible panty line that is formed on the backside of a pair of fullback (granny) panties by the gusset stitching, going from one butt cheek to the other.
Oh man, every time that Nancy bends over when in heryoga pants, you can see her bumstache!
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!