Top Definition
A workout that consits of standing infront of a mirror, and flexing to build muscle.
Usually used by people who are extremely vain/douches/tools/ect.
Guy 1: You see that guy over there?
Guy 2: Ya what a tool.
Guy 1: He's sweating balls doing the Eik-flex workout.
Guy 2: Ya what a tool.
by GeoffandMikeforever April 17, 2008
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