When someone is acting like a dick. Acting like a know it all and never admitting when wrong.
Did you see that mess he made? Yes stiofan is a right Rupert
by Crazysteve July 28, 2016
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He will take you into bed, lick your privates until they feel like jelly.
My partner Rupert took me to a hotel room and I came out feeling like jelly.
by FIREBALLZ AND ICEBALLZ November 26, 2019
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Either a bear or a sweet teenage boy
Ruperts are most commonly known for their creativity and lack of alpha male qualities. They are usually found at concerts or at youtube gatherings, they breed mainly in the summer and habitats include London and Devon. Ruperts normally migrate in small groups these groups can include a queer, a short person, a ginger, a tall boy and a quiet boy.
omigosh your such a rupert today!

what kind of a rupert are you??

what the rupert?
by Ishy Squish June 9, 2009
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This is a small creature who is invisible. He starts whispering stuff in your brain somewhere around the age of 25. Helpful comments to the effect of "Ahh, video games and pornography again, another success for wenesday. Dad's gonna be REALLY proud now!"
"Ahh more games and hentai this time? Perfect for a weekend"

-Rupert
by BleachGirl101 November 6, 2018
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A crack head with crack head strength, his attributes are cocaine, Heroin, crack, marijuana, crushed ibuprofen and smells like, ass, piss, vodka, shit, vomit, the road after rain, and the garbage can after seafood dinner
Bro you smell like a total Rupert
I know it was a tough day in the sewers
by Swampinius Masolai November 15, 2021
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a code word used by many for marijuana
im goin to smoke up that rupert today
by desibaby March 15, 2005
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