Billy is a small midget. He gets very offended for no reason.Has a girlfriend who is really pretty and popular although he is not.
by minecraft21APINYAILOVEHRVY December 5, 2018
Get the Billymug. 
A man who loves sleeveless shirts, hitting on sisters, destiny, and having hardcore sex with his mustang
That guy's a real billy!
by Gay_is_not_ok August 19, 2017
Get the Billymug. The THICCEST NIGGA there is. He is very smart and black boi. If you ever see him on BORTNITE then you will probably get your ass fucked.
by iiksdub October 28, 2018
Get the Billymug. What the fuck is a Billy?
by Billylovesfordandnuts November 21, 2019
Get the Billymug. A really smart guy that gets all As. Everybody at his school likes him, even all the teachers. All the girls want to pose with him, all the boys want to be his friend. He is also really good at basketball, and is the reason why the team wins all the time. If you wonder who the most popular kid in school is, he is the answer! No one is as amazing and popular as him.
Sydney: Uggh, I’m struggling with my math homework! What should I do?
Hannah: Oh, go ask Billie, he is really smart and will help you
Lily: Oh yeah, I forgot, Billie is the best and is really smart. Thank you!
After talking with him:
Lily: Wow, thanks to Billie, I now understand calculus so much better!
Hannah: Oh, go ask Billie, he is really smart and will help you
Lily: Oh yeah, I forgot, Billie is the best and is really smart. Thank you!
After talking with him:
Lily: Wow, thanks to Billie, I now understand calculus so much better!
by Billythegoat24593629 July 17, 2019
Get the Billiemug. a complete fucking idiot. someone who has no idea what they're talking about, and is a serial compulsive liar. Usually that guy that follows every one else around and nobody really knows why he's there.
by Niggii August 19, 2011
Get the Billymug.