A revolting affliction in which the elderly leave mysterious particles on the toilet after using it. Causes range from years of soaking in their own filth instead of showering, or sandy vaginas.
Harry always had to wipe down and sanitize the toilet seat before taking a dump, as his 65 year old mother had a severe case of crotchdust.
by Bartina March 14, 2008
Ann wasn't fond of Rick's attempt at crotchdusting her, but that didn't stop her from trying to queef on his cock.
by Cracker Mcgee October 11, 2009
When you scratch your nuts and the lint from your balls lightly dusts whatever surface you scratched them over
by xX_ChAcA_123_Xx August 30, 2018