When you are going down on a particularly fat woman, you wear her fupa like a hat. When she is about to climax you stand up as quickly as possible allowing the fupa to strike the clitoris to achieve an orgasm.
Tim is eating out Penny when she starts to get close, he quickly stands up and her fupa finishes the job. Thus the Fupa Dupa is achieved.
by PinkGuru December 30, 2008
1 more definition
An expansion of FUPA (fat upper pussy area); akin to super- duper, FUPA-dupa is a supah-dupa-FUPA.
As we were watching TV, Thad Jarvis pointed out that the woman was not plain FUPA, but she was FUPA-dupa.
by dean teh peen January 28, 2008