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1: A verbal exclamation while straight chucking the duce (to show the peace sign) as to dismiss someone or to pay respect to ones peers while he or she is exiting their presence or ending a conversation

2: A fictitious giant robot from an anime titled "The Big O".

1: Yo man I've got to go squeeze Hershey (to poo) and you'll probably be gone when I get back so megaduce.

2: She kept on cheating so I had to give that bitch the megaduce.

3: P1: "Big O! Action!"
P2: "Where in the world did that Megaduce come from and how can he control it!?"
by Kevin Knowles February 23, 2008
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