When you're sat in a car and the vibrations and bumps in the road give your an erection.
Mate, I've got a full-on Diesel Weasel from that drive.
by AnonymouslyYou August 3, 2018
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When a Man performs Anal Sex on a woman(or man) with diarrhea
She said she was sick...so i just gave her a diesel weasel
by Sparks21686 October 7, 2010
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