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1.
The effect that cold has on fat people legs, whereby they go red and blotchy, looking like corned beef.
Fat chav girls wear short skirts without tights for xtra corned beef legs effect.
by Stroppy June 01, 2006
 
2.
The consequence of having your laptop resting on your legs too long.
The heat projecting from his laptop whilst intermitternetting caused the occurrence of corned beef legs which created a heated, burned mark on his thighs.
by Katalan May 06, 2014