Top Definition
Someone who is tricked into drinking urine
"HAHA we got Alex to pull a Murphster. He threw up all over the place"

"It wasnt a Murphster, she drank it on purpose"

"Ur fucking sick you tricked him into doing a Murphster"

"YOU SICK FUCK! YOU MADE ME A MURPHSTER!!!"
by AUSTIN HALE June 27, 2008
5 Words related to Murphster

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