1. An expression used when one has just got owned at life in the highest degree of ownage.
2. an expression used when one has been defeated or humiliated and there is nothing left to say
P.S.Also when you take out the " 'd " it becomes a synonym for " DARN IT"...ect
*Joseph just got kicked in the jewels*
Daniel: Chet Mo'd!!
*Joseph just peed his pants*
Joseph: CHET MO!!