armpit mustard

A mustard that is under the arm in the pit.

Armpit mustard became popular when Ethan Dolan spoke on twitter about having this condition.

Grayson: Yo bro!
Ethan: Yeah bro?
Grayson: What’s that pastey stuff under your arm man?
Ethan: Oh that? That’s just my armpit mustard man
Grayson: Cool dude!
Ethan: Yeah man

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