The tendency of African-American "males", when losing an argument, to make an inevitable comment about his penis size or sexual prowess, no matter how irrelevant it may be the topic at hand.

Can also refer to sexual crimes/harassment committed with one's "muh dikk".
E1) White guy - "Leroy, I believe your theory is incorrect. KFC, in fact, IS detrimental to one's health".
Leroy - "Shutup foo! You jez beez madz cuz' all da white wimminz want some o' dis big black dick!"
White guy - "Leroy, I fail to see what your mention of muh dikk has added to this conversation".

E2) Tyrone couldn't help trying to muh dikk all the white wimminz in his neighborhood.
by Steven Edwards July 13, 2008
Get the muh dikk mug.