While driving around naked, Gerard and Elmer counted the nippola bumps on Beth's tits.
They were surprised to see that Gerard had more nippola bumps than Beth!
After discovering that one of Gerard's nippola bumps was a zit, they realized that he had exactly the same amount as Beth. This was cause for great celebration!
A dusty bumper is the action of falling ass-first into the dirt while ones pants are around their ankles. Common during rowdy outdoor sex and defecating in the woods. If the latter is the cause of the dusty bumper, one may walk away with a rusty bumper.
Earl: Last night, I was beatin' cheeks with Becky in them woods right behind my trailer, when i tripped over a stob and gave myself a dusty bumper!
Jim-Bob: Well hell yeah brother, than poon is totally worth it! Fuckin' ain't nuthin' if she ain't yer cousin! Yeeeehaw!!