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Striking your opponent with shocking and devastaing force, first in the groin area followed by a strike to the solar plexus of the opponent. Inflicts maximum damage by way of an unprepared secondary attack.
Guy1: *punches his opponent in the groin*
Opponent: UGH MY NUTS
Guy1: *follows up with a punch to the stomach*
Opponent: UGH MY GUTS *falls over in pain from the Nuts and Guts attack*

As seen in Code Monkeys
by CaptainMercy February 21, 2011