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A person who spends a good portion of their time watching several sports, and more importantly criticizing them, when they themselves cannot actually play any.
"Tim's dad says the Lions would be a much better team if they trade #22."
"Tim's Dad? He couldn't throw a football across the street. Only skill he has is tossing beer cans, He's a total Couch Athlete!"
by Capt. Asshole January 18, 2012