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A person who leads you to believing you will get laid but doesn't finish the job. Most commonly females.
We were making out heavily but when she wouldn't let me take off my pants I realized she was just another blue baller.
by audful September 01, 2008
he who has the blueballs
B.B. is scared to jackoff so he is a blueballer
by chris and willy June 18, 2006