Top definition
A disgustingly obese girl. People tend to stray away from a bench she is sitting on because it is likely to break. Fatty Maddie tends to gain an immense amount of weight on the weekends due to her excessive drinking and her many keg stands. Although Fatty Maddie can be a kind person, she tends to come up a little short with her looks and personality. If she was an ice cream, she would be vanilla.
"Hey! where did my sixteen pies go??"
"Fatty Maddie probably ate them."
"But i was only gone for three minutes.."
by DobDob April 20, 2009
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