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Term adopted during a jog or run used to describe the targeting and chasing as a fat person.

Be careful not to aggravate the 'fatty' however, since this may result in being the victim of a Casey Heynes-style attack.
Runner: I'm going to catch a fatty.

Fatty: I am unable to evade since I'm full of chocolate.
by Certainly Not Jack March 21, 2011
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