a gathering where a group of people play Super Smash Bros., for fun and to train their skills.
Man, I kept getting my ass kicked at last week's smashfest.
by wisl March 22, 2009
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When a huge group of people get together for one soul purpose. To have lots of sex! Basically an orgy.
Bob: Yeah dude. we went over to Cast's last night to have a Smashfest!
Sarah: I wish I would have known! I need a good fucking.
by Raaalphie. June 26, 2009
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