Definitions by Steve Uknow

umpa lumpa handshake 

The act of masturbation after eating an entire bag of Cheetos.

"So I was sitting in my parents basement enjoying some Cheetos and porn, when i gave myself a umpa lumpa handshake. Let me tell you it was the best handshake ever!"

umpa lumpa handshake by Steve Uknow March 14, 2011