1 definition by My Fist

When you punch someone in the gut, crumpling him over, then punch that person in the face.
Mike Tyson beat him with the old 1-2.

Note -- Also carries ambiguous sexual connotation.

Bill: I gave her the old 1-2.
Ted: ... dude, fucking wifebeater.
by My Fist February 9, 2006
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