An STD you get from a really trashy girl/guy.
Toothless Tammy blew me and now I've got the trash rash
by TheDukeOfPuke January 3, 2007
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trailer trash rash, a type of ringworm you get from the trailer trash cats living under your house.
“That trailer trash rash looks really bad.”

“Yeah, I got it from the trailer trash cats under my house”
by stinkytrailertrash December 3, 2019
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