look up any word, like the eiffel tower:
 
3.
where you stick it in a persons ear and pull it out and wipe it under the persons nose and you say TA DA! thats a dirty thomas.
Biach you just got dirty thomas ed!!
by sexy joe July 14, 2006
 
1.
When two guys are having anal sex, the partner taking it gets off, sticks their thing in their partner's mouth and spins like a pinwheel on top of them.
Dude, me and Thomas pulled off the best dirty Thomas I have ever seen.
by Aquatic Caribou April 22, 2009
 
2.
Also see- dick tease.
Origin- Started with D T, short for dick tease. Then transpired into dirty thomas.
I ain't messing with that bitch, she's a total dirty thomas.
by ru-daddy January 02, 2011