A pansexual dilettante and/or sequential hermaphrodite who makes odd, senseless statements and spills his Dairy Queen upside down trying to be like the commercial.
Awesome Guy: Why'd you dump out your Blizzard on the ground?

Billy: They did it on the commercial.

Awesome Guy: You're such a pansexual dilettante and/or sequential hermaphrodite. Shut up.

Billy: Okay.
by NotBilly July 18, 2009
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A guy who thinks he is all that but is actually an immature fat jerk
Billy is so stupid
by SwimmerGirl223 February 23, 2016
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A retard who thinks urban dictionary is the best thing in the world.
Oh my god, Billy's gonna search this on Urban Dictionary.
by BakedBeans2005 September 17, 2019
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Somone who has a 99% chance of owing you money
Hey can you spot me for a sweatshirt- billy, I’ll pay you back next Friday -billy
by Billy billy May 14, 2019
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Pretentious actor snob who wears pirate shirts on the first date and seduces you by borrowing your eyeliner.
"Who's that fag?"
"Look at the shirt man, must be a Billy."
by ApparentlyGypsy October 23, 2011
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Slang word for the feeling of being slightly high from marijuana.
"I feel slightly Billy"
by alex.patel_99 January 17, 2022
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"Hey Aiden is that leafy?"
"No its just billy!"
by fortniter2690 December 29, 2021
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