Muh Dik (or 'my dick' in the plain English format) is an Afrocentric ebonic term that blacks and other African-Americans use to boast about their manhood, sexual appetite or sexual strength.

It's often used as a last-ditch effort to distract from the fact they are on the losing end of an argument or debate
Leroy, you're wrong and you know it

Leroy: Muh dik is big
by DaveInTexas February 8, 2022
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This isn't just a phrase, but also a belief or dogma, seemingly held in earnest by many. Based on stereotypes, Black people often either claim or are presumed to have bigger packages than White people. Hence the phrase gets ascribed to Black people. But White people, in turn, often claim or are presumed to have bigger packages than Asian people. Thus, the belief, if not the phrase verbatim, is perpetuated by people of various races. Anyone is prone to this fallacy.
Guy online #1: All Blacks do when they're losing an argument is muh dik.
Guy online #2: Hey, aren't you that guy that said Asians and Indians have small dicks?
Guy online #1: Yeah... so?
Guy online #2: That's a "muh dik" mentality right there. And unlike with Black people, it's not just a presumption or putting words into someone's mouth. You actually said it.
Guy onilne #1: Haha asian pp small hahaha
by SamBissell June 16, 2023
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A phrase uttered by blacks, referring to the size of their manhood or sexual prowess, and is often used to deflect the fact they are losing an argument or debate
Leroy, you're wrong and you know it

Leroy: Muh dik is big
by DaveInTexas February 8, 2022
Get the Muh Dik mug.