boo 

To be upset or to sulk. To be miserable.

I ate the last donut in the box, which put Wendy into a right Boo.

boo by gavween February 6, 2007

boo 

you say it when you are upset about somethin but not like crying upset, like if your on msn n sum 1 goes i dont like you messing about youd go boo

hannah:hey you still coming out today
chloe:no sorry i cant
hannah:oh boo

boo by hannah April 4, 2005

boo 

buddies, people u hang around wid . ur homies

big up to my boo

boo by mskelly August 1, 2003

boo 

the person in which you are speaking to( friend, jam, dawg, homie)

Hey Boo!
You my boo!
Did you accomplish the shady buisness boo?

boo by ARGS November 19, 2003

boo 

Adj. to feel sad or unhappy, N. a sad or unhappy person, Intj. a statement of unhappiness

Adj. I'm feeling very boo today.
N. You're such a boo.
Intj. Boo! (not a scary fast boo but a long drawn out unhappy yet loud boo)

boo by Kristin October 8, 2001

Boo 

A white girl or acts like shes from the a different race. Usually while dating the other race.

That girl is acting like a BOO! From the Hamptons talking like shes from Detroit cus shes with a black man!

Boo by james haynes May 15, 2008

boo 

used when apologetically expressing that you've done something wrong.

interchangeable with "my bad"

" I left the chicken in the oven too long, ma boo."

boo by Nicky NOTORIOUS March 22, 2004