It is when you leave the bed during sex to get a doughnut.
"Fuck me harder baby!"
"I'll be right back I need a doughnut"
"Oh, no don't pull a billiam on me now I was about to cum"
by Joerin August 09, 2004
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When you're full name is Bill, and people ask what your "full" name is and you say Billiam (cause William's kinda weird if your full name is Bill).
Guy 1: I have a question Bill?
Bill: yeah?
Guy 1: Is your full name William?
Bill: Uh no it's uh... Billiam, yeah.
Guy: ah nice to know :D
by deep fried potato November 27, 2017
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billiam is a shorter name for william
Fundo got smacked in the face by billiam for calling him william.
by authoor@gmail.com July 07, 2006
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A retarded version of William. Bill + William = Billiam.
Me: Ayo Billiam!
William: Don't call me Billiam I'm not retarded.
Me: Ok Billiam.
by themuthafuckingjunbug July 23, 2018
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That one person who won't stop fighting with their brother. Extremely fun, will send memes. A person you must protect with your life. Billiams, or sometimes known as Staniels, are very loyal. They are smart, genuine, and kind. They like their inhalers, and happen to lose them sometimes.
Billiam is so amazing!

I want an amazing Billiam!
by GrandpaWinston October 23, 2019
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A small short dude who is sad, pressed, and loves to watch anime by himself cuz he is a loser.
Oh there's short Billiam , and he is watching anime.
by Pickledbanana November 24, 2018
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