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Something that’s like really unexpectedly cool. (The opposite would be if something were to “sink”)
Wow Amy, that party was buoyant. I can’t believe we almost didn’t go.

Opposite:
Omg Amy, that party sank. Can’t believe we thought it would be fun.
by About20ninjas June 02, 2019
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2
Getting absolutely magged, loose, drunk at a party.
Tom: dude i think we are drunk
Todd: we are fucking buoyant!!!!!
by Tootmas March 11, 2014
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