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A woman's biceps that are large, photogenic and the result of the long hours put in in a health club by a gym bunny.

Cougars often wear sleeveless dresses by Marc Jacobs to show off their muscular physiques.
Look at the sheceps on Madonna!

That cougar could kill you with her sheceps if she got you into a headlock.
by Steven Gallanter March 05, 2008