Top Definition
a girl who's true fatness is covered by a jacket or being in a car.
dude, she was fine till she took off that jacket... sick, shes a secret biggie
by Duog September 04, 2006
1 more definition
10 Words related to secret biggie
A girl who looks thin underneath a jacket, but when jacket is removed turns out to be fat
Secret Biggie is self explanitory
by mlke June 02, 2006

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