1.)
Chicken Legs, aka
Chicken Leg Syndrome, occurs when clueless jock guys go the gym and train nothing but their upper body; arms, pecs, and shoulders, and they completely ignore their legs. They ignore their legs because they don't know how to workout, and because they think that girls will have sex with them if they have
big arms.
They look out of proportion to the point of being a joke, and it is officially called "Out of Symmetry."
2.) Meatheads who wont train their legs.
*at the gym*
John: "Hey man, we gonna train legs?"
Mike: "
Nah brah, its all about
big arms yo, legs dont mean shit"
John: "Yah but now you
got chicken legs and you look like an idiot"