to engage in noisy revelry without restraint; to carouse.
Pete: "Hey what you doing this weekend?"
Cook: "Man are you a fool? I am going to royster with the oyster dude, it is the biggest party of the year!"
Pete: "Damn, I gotta stop living in a hole, I can't believe I forgot again..."
by Pete Dick January 13, 2008
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The dopest hall on the face of the Earth. Home to the coolest, strongest, and best looking guys on Gardner-Webb Campus. Girls love them, guys want to be them. One thing is for sure, no one's like them.
Tracy: What are you doing tonight?

Jenny: What do you think? I'm going to chill with those awesome guys over at Royster.

Tracy: I love those guys.

Joey: Me too....
by johnnygwu September 13, 2009
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Commonly used as a Surname, refers to being a ‘bully’ (picking on someone, being condescending ,ect.) while drunk. It comes from the same context that brought you the surname smith ,with your ancestors being black smiths.
You’re such a Royster while drunk.
by Qui-Den June 13, 2021
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To push yourself with emphatic relentlessness to the point of obsessive and nonsensical egotism.
Male 1: "What the fuck is he doing with that barbell?"
Male 2: "Get back, dude. He's roystering."
by SilverSerenade March 27, 2023
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1) a bog eyed little boy with chronic B.O. , CHRONIC, no real friends and a MASSIVE bee oh en jee

2) sex toysters

3) a person who has plugged there batty with a penis shaped corkstopper

4) a teenager who is fragrant but not in a pleasant way

5) the scrawniest, skinniest most pathetic little bag of skin bones and spot puss in the absolute world
1) you know little ben, hes turning into a bit of a roysters dont you reckon?

2) if you go to ann summers you can buy a range of roysters (butt plugs)

3) almost every person in canal street manchester at this moment in time is a roysters

4) im smelling like a bit of a roysters at the mo

5) faz is well roysters
by McShuLad April 28, 2010
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The art of performing anal with a pig while eating a pork BBQ sandwich
"I pulled The RJ Royster last night on my grandparents' farm."
by DonkeyMan18 December 8, 2014
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