one who does ridiculously annoying things to his/her friends. Most commonly used when more than 2 people are playing a video game such as Halo and one person incessantly kills his own teammates to be funny.
1: "Who was that guy that kept killing us on xbox live last night?"

2: "I don't know, but he was a total poonschwab."
by Lucky Chucky November 10, 2007
6 Words related to poonschwab

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