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A male who is monumentally successful in engaging in coitus with a large number of female partners. Clearly an allusion to going through pussy like people change their socks.
"Wow! Eric lost a shit ton of weight and got his ass in the gym and muscled up. That guy's a fuckin' cat wasting *machine* now!" <or> "That guy's super popular with the ladies...he's a real cat waster.."
by silentsabre March 08, 2012