Top definition
when a man with a big cock fucks you on the first day he met you with out either of you finding out each other’s names until the next morning
Kim: I saw you leave with that guy last night how was it?
Sam: it was so grate he but he pulled a dirty Gavin though
Sam: it was so grate he but he pulled a dirty Gavin though
by TheNaborhoodDad April 15, 2020
3
A dirty Gavin is where you get another man to shove his penis in your butt while jerking off in the shower.
by The_mad_racer_69 September 22, 2015