Definitions by Dr. Mantis Toboggan, M.D.

hang dong 

To expose one's penis

Charlie: "It's like the biggest movie in America."
Dee: "Plus, I hear the guy hangs dong and I'm very interested in seeing that."

Do you like to hang dong on the trolley?

hang dong by Dr. Mantis Toboggan, M.D. December 16, 2011