A pain located in one of the lower quadrants of the abdominal area or kidneys resulting from an overweight person performing cardio or abdominal exercises, due to a lack of physical strength, stamina, and overall well-being.
I decided that I should start running regularly, but every time I run for more than two minutes, I get fat cramps.

Justin did like 12 sit ups before he couldn't do any more. His fat ass got fat cramps
by randymcgr March 6, 2011
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noun: The pain that you endure will doing strenuous cardio activity.
Oh, man, I should not have had those hotdogs I now have a Fat Kid's Cramp.
by ZappaGnat July 7, 2011
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