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The same as "on my momma". (See on my momma)

I swear on my mother's grave...followed by the word, "Though" or preceded by the word, "However"
Imma beat dat ass fam...mammy doe!

(However, I swear on my mother's grave, that I'm gonna kick your ass)
by Mufasa205 May 05, 2011
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Sep 8 Word of the Day
A casual invitation / threat used by an individual that is not afraid of fucking someone up.
PAUL: I'm going to beat your ass.

JACK: Fuck around and find out, fool!
by NX STARCHILD October 16, 2020
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