Top definition
An acronym for "I wouldn't but Mufeng would," usually means that you would not do anything that Mufeng would do.
Dude 1: "Hey would you fuck a guy in the ass for a billion dollars?"

Dude 2: "IWBMW"

Dude 1: "Real talk."
by thefuckingzenmasterdyang January 04, 2010
Get the mug
Get a IWBMW mug for your papa Paul.