mustachepube Posted in M Best definition mustachepube the two hairiest parts of the body all put together into one ultimate insult. person 1 : hahaha. im soo funny. person 2 : no. you are a fail, you mustachepube. How satisfied are you with the definition? Looking for mustachepube meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 114 times.