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A speedy weasel is a guy who isn't great looking, who finds smokin hot chics at a party who are totally smashed, gets them to have sex with him and then nuts in like 3 seconds.
Jennie- OMG last night I was so wasted I had sex with this really ugly guy and the worst part was he nutted in 3 seconds!

Jessica- Sounds like you've been had by a speedy weasel
by robbie bobbie June 05, 2009
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