a water pipe - bong - used for smoking cannabis
Pack that cone and pass us the billy.
by willvi August 20, 2003
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A person with no friends. Someone on their own, particularly in a pub or club. From "Billy-no-mates".
"Look at him, he's a right billy!".
by truthtalker October 9, 2003
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n: 1)someone who thinks or acts like they are a badass; Taken from the phrase "Billy Badass."
2) someone who destroys things because he/she thinks that people are impressed/ intimidated by it.
1)Scott got wasted last night and started acting like a billy; he started smashing beer cans on his head and tried to fight 5 different people.
2)Scott came in, being a Billy Badass as usual, and kicked over the fuckin couch.
by DRFarm February 20, 2006
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a person who thinks he/she is too tuff or cool. Billy badass
I was at the club and the bouncer was acting like a billy
by BillyP March 24, 2006
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A Japanese rockabilly guy or girl. Usually spotted dancing at the entrance to Yoyogi park in the Harajuku district of Tokyo.
Q: Where's that Elvis music coming from?

A: It's just a Billy dancing in front of the train station.
by jstewart October 5, 2005
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a sick freak who tends to claim his toilet overflowed, but really he is a psycho who pisses and shits on his own floor. He will tend to live in these conditions for a semester or two of college. There may also be notorious trash strewn throughout his room along with bits of chewing tobacco.
person #1 "eww gross"
person #2 "yeah man don't be a billy"
by woofwoof543 March 25, 2011
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