1) A boy who is crazy about a girl but refuses to make any relationship public. He loves her one day, just wants to play xbox the next day, and the day after that she and her whole family are dead to him. He is inconsistant and irrational. Half the time he doesn't even make any sense. He also doesn't even know how to treat a girl right.

2) A boy who has the ability to be nice but just doesn't feel like it.
1) Girl - Why did you break up with your bf?
Other Girl - He was being a Brian.

2) I'm just so disappointed because my bf's a Brian. He just doesn't care enough to be good to me.
by orangejuiceistheshizz April 26, 2009
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1) One who attracts random gay men, most of whom are shirtless.

2) One who tortures and kills small animals for their amusement.

3) One who randomly breaks into a high-pitched effeminate voice when angry and/or upset.

4) One who has starred in numerous cheap pornography productions.

5) One who thinks he is clever but only ends up getting screwed over.

1) That guy getting followed by that shirtless kid must be a real Brian.

2)That jerk is such a Brian. He disembowels doves for fun.

3) Calm down you pansy! You are such a Brian.

4) This is the fourth movie we've watched with that Brian in it!

5) That idiot is such a Brian.
by Ms. Clean September 1, 2008
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Brian is a psychopath. He is extremely impulsive and does whatever he wants. He might seem kind on the outside but on the inside he is worse than the devil himself. He will befriend you and stab you in the back the second he can. He has no morals. If you ever meet a Brian. Run.
Literally nobody:

Brian: *Laughs like a maniac*
by Sasuke's mommy September 16, 2019
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A no-good drug addict that’ll cheat on his girlfriend multiple times, with two different people, but especially on their 3 year anniversary (5-21-15) and never tell her. Has major anger issues and will blame anyone and anything but himself when his own actions make shit worse. Probably going to be an alcoholic before 30, if he lives that long. Will never make anything of his life and is a complete waste of space.
Brian: I’ll cheat on my girlfriend in her bed and do drugs in her house but act like everyone else is the problem!
by U thought bitch u thought September 17, 2018
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An Asexual being that loves plants
This kid Brian not only loves plants, he loves to smoke them!
by The flu guy November 12, 2019
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A Brian is a funny guy if you have the same type of personality as him. If you don't, then he's a jerk. A Brian can be a nerd,

but no matter what he is, he's always on some sort of electronic device.
Mr./Mrs. (Teacher's name), Brian's on his phone again!
by Codfish0308 December 18, 2017
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