A dusty cock is the residue, ie. jizz/ pussy juice combo, left over after banging a slam piece. When dry this jizz/pussy juice combo often leaves a white flaky substance also know as "dust".
by DePauty February 3, 2010

Since the convenience store was closed and there was no lube left in the tube, the only pleasure they would find was in a dusty barn.
by memphiscreep October 8, 2010

by Galette Bedford May 9, 2011

When a person is performing the act of masterbation and at the peak of climax grabs an old "Dusty towel" and rubs it on his face in an attempt to sneeze. Which in turn will create 9/8 of an orgasm since a human sneeze is said to be the equivalent of 1/8th of an orgasm.
"Hey Jeremy I tottally gave myself a dusty towel last night." "What the fuck is wrong with you Ryan?"
by Dusty146 November 6, 2013

by Chunkz_dont@me February 1, 2022

by BigBodyLexus June 3, 2015

by ClamSpam January 17, 2018
