Top Definition
similar to a rat bike, survival bikes are made from 3-4 other motorcycles bodged together with various crap taken from a WWII scrap heap with the intent to appear as if it had been ridden off a Mad Max or zompocalypse movie.
"cool survival bike! where did you get the gas mask, ammo belts, and katana?"
by Bionic-Byronic October 09, 2008
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