Top Definition
Man or woman exceptionally bad at getting action. Usually dwells in the basements of his or hers parents' house. Can be seen masturbating 3 times a day, once after every meal. A Shamzy is known to often acquire dead animals and use them towards his own *benefit*. Usually cleans up semen with his mother's panties he has just masturbated to.
There was a Shamzy at the party, but I kicked his ass once he came on the cake.
by jass_band October 15, 2011
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