Top Definition
A guy/girl who becomes the test subject in a relationship. He/she had a crush on you, without knowing that you're just wanna play around with him/her. Usually ends with the guy/girl being dumped.

Watch the movie 'How To Lose A Guy In 10 Days' to get better idea
Guy #1: That jock at school just wanna have fun with one of the cheerleaders. He doesn't intend to have serious relationship with her

Guy #2: Too bad the girl still fell in love with him
Guy #1: Oh well, there goes another crush test dummy
by chrno July 27, 2010

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