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1. Fishtail
n. An illegal car manuever where the driver of a 4WD vehicle causes the rear tires to swing back and forth leaving fish tail-shaped tracks, often to create a dust cloud for anyone who might be following.
by wayfarer Apr 27, 2005 share this add a video
2. Fishtail
Stick your hand in a girls pussy then shake it like a fish out of water
man i fishtailed that girl so much last night
3. Fishtail
A booty that shakes left to right while walking
"Yo, Binay got a fishtail on her"