Brennan can used as a proper noun, adjective, or verb. He is sometimes used as a secret hand shake, a put down, or maybe just a person in your school. The music he listens to is hard-core country, rap is NOT tolerated so when you're near a Brennan, be careful on what radio station you put on. Friends are not a big part of a Brennan's life except for his best friend, Caitlyn D. His name is also substituted for normal words in many songs.

Boy: Hey babe wanna go play yahtzee?
Girl: GO BRENNAN YOURSELF!

2 friends: rock paper scissors says brennan!
Brennan country music rock paper scissors Caitlyn secret hand-shake
by ilovebandcamp August 11, 2011
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Brennan is a freaking ninja he is boss at martial arts and he loves doing it Brennan is also an idiot he hangs out with losers and his best friend is an idiot. Brennan is a nice funny guy
Brennan will do his school work but HATES math and doesn't do it Brenna will stick up for his idiot friends Brennan loves music but hates pop and country music and he loves to play video game like the fallout games and zombie games Brennan will do crazy stuff and like to go walks and hikes Brennan loves drinking energy drinks. Girl's would die over Brennan and he's built and has a 6 pack and girl's are all over that but he doesn't know and doesn't care. Brennan is an awesome person once you get to know him but he might seem rude and stuff but is real nerd once you know him he calls his friends stupid name and can't come up with a name that usually bad. Brennan is true bad ass and an epic friend just don't get him mad or he will rek you.
by That idiot over there February 22, 2016
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Brennan’s are the best. They slay life and are total queens. While being very confident they are also very kind and supportive to others. Brennan’s are the kings and everyone should be more like them!
“Wow, did you see Brennan? He’s such a sexy slut! I wish I could be like him!!”
by Yassssssssqueenyouslayme69 February 21, 2019
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A weird friend in general, then he takes peoples shit. He also is a good Call of Duty. He isn't a Minecraft kind of guy and he has anger issues and lies a lot! Brennan's from the best coast (Specifically Nevada) claim that he has never masterbated before. He also looks emo and looks sickly.
"I hate this! No one likes me except Melody"

Me - "I love you Brennan < 3 :)"

"Fuck you Justin!"
by Muget12 December 28, 2013
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Goes bright red and says edgy a lot. that’s it.
Say something edgy” -brennan
by Buckchuck02 February 10, 2019
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A Brennan is usually the type of person who has good friends, and typically sticks with them, however some people get annoyed with the amount of times they call.
“OMG I love Brennan he is so sweet
Yeah but why does he keep calling me???”
by Akakakakkakakakkakakkakaka October 1, 2018
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a pervert who has a small dick and pees on bathroom floors and gets suspended
Damn that guy is such a Brennan
by Aubrey&Valerie February 4, 2012
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