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A term used to describe a straight man who is pleasingly happy, exuberant, boisterous. Term still applies if said qualities are fueled by alcohol or prescription drug use. Can also be spelled boister.
Shankar's not chronically happy or relentlessly happy, like those douches who think being perceived as happy (read: successful or leisure class) is a status symbol. He's just a boyster.
by Sarahrah May 20, 2008
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"My roommate left a boyster on the side of the bathroom sink. I can't wait to move out."
by Gunfire Roger August 07, 2017
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