Top Definition
A term used in St. Louis by African-Americans, meaning "I swear". Rumor has it that the term originated from a man named "Chunk" dying in a car accident, hence the term "On Chunk's Grave."

Variations include "On my Momma", "On Me", and "On Jesus" or just "Chunk".
On Chunk I didn't take your money.
by On Chunk July 11, 2009
5 Words related to On Chunk

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