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36.
boo
A word used to scare people.
Guy: "BOO!"
Guy2: "omgwtfbbq"
by Gracin July 11, 2005
 
37.
boo
A word used to scare a person
Person 1: BOOOO!!!
Person 2: AHHH!!!
by Reagan Lausche February 21, 2005
 
38.
boo
Sound that a fake ghost would make
Ghost:BOOOO!
Child:AHHHHHHH!
by BEYONCE November 08, 2003
 
39.
boo
Marijauna, pot.
I like boo, it keeps me happy the whole day because I don't know what the hell I'm doin.
by um..... Mr. Cheese December 23, 2002
 
40.
boo
the incorrect spelling for the word Beau. most commonly used by people who have heard the word but do not know how to spell it. beau meaning: boyfriend or girlfriend. boo meaning: what a ghost says.
went out with my beau last night.
the ghost screamed boo
by chitownpaul October 12, 2011
 
41.
boo
Slang terminology for marijuana
I got high off that boo last night!!!
by Shont3 May 18, 2010
 
42.
Boo
a term for someone or something that is lame.
not good. Something you disagree with.
A word used when you don't like an action that is occurring. such as the movie hook's "bad form"
1. you can't come to the party? Boo!
2. you told me you were sick, your performance was Boo

"Hey you got a nice ass can i have it?"
"Boo!!! hell no!"
by M!ZZ. July 03, 2009