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1 definition by FiLTHSLUG

 
1.
a female who eats more than the recommended daily calorie intake; to pig out; preferably someone who is overweight
You ate a whole cake to yourself? Damn, yous a beefcat!
Ohhhh dang, she's beefcattin' it up!!
by FiLTHSLUG February 17, 2011