Top Definition
Weight strategically gained in order to protect vital organs and muscle for when the occasional fight may arise. Some may claim this is an excuse for being overweight, this is when you explain and flaunt your impressive natural protective padding.
Jim: Hey Bob, did you beat that heavy guy's ass yesterday?

Bob: Hell no Jim! He had Karate Fat! My attacks were useless!

Jim: Karate Fat? That cunning fatass.
by G-Wash August 05, 2008
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