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1.
a person who sucks penis after it has been in their own asshole
that girl is a dirty cocksucker she will clean your dick with her mouth after you fuck her in the ass
by bleep December 23, 2003
 
2.
An old, bald whack job, who looks like the Crypt Keeper, who runs the Crossroads, Insight, Pathway and Cornerstone drug abuse programs.
This guy, Meehan, who did seminars at the rehab I was in was a dirty cock sucker. I mean, a REAL dirty cock sucker. I asked him if he would suck my dick if I cleaned it off real good. He said no.
by Good Orderly Direction April 06, 2008