Don't get hurt while your away. Usually this phrase is used when friend or family is departing.
Susie: Bye Mom! I'll see you later.
Mom: Ok Dear, No Boo Boos!
by Wendy Jensen December 8, 2003
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People who are scabs on society, pieces of crap, and accidents are known as Boo Boo.
"Oh my god Terry. Look at all the Boo Boos shopping at Walmart today!"

"Hey, get off the welfare and get a job Boo Boo!"

"Wow. Loose a little weight Boo Boo."
by wsimon98 July 5, 2013
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A childing synonym for a mistake or a skin cut.
OW! I think I got a...cut the size of the Death Star.
by dj gs68 November 2, 2003
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Yogi has a little friend BOO-BOO, BOO-BOO! yogi has a little friend BOO-BOO-BOO-BOO-BEAR! BOO-BOO-BOO-BOO-BEAR!BOO-BOO-BOO-BOO-BEAR!yogi has a little friend boo-boo-boo-boo-bear!
by MK July 7, 2003
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1. the act or action of taking a shit or the shit itself. see also: dookie, poo poo (exact variation), shizat, #2, or just plain shit.
2. a general derogatory statement for a mistake or a bad action (more often used in the shorten version a "boo")
1. I gotta take a boo boo. That apple pie smells like stright boo boo! that damned cat boo booed on the carpet again!
2. Man that football play was straight boo boo!
by DV October 28, 2003
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Boo boo and boo typically don't have the same meaning. boo boo can refer to:

1) (noun) a mistake, usually a small one, but humorously a large mistake.
2) (noun) a small injury such as a cut or a bruise, used for children but humorously used for adults as well.
3) (verb; noun) the act of defecation (going poo), or the poo itself.
4) (adjective) general unattractiveness, lack of quality or badness.

Because of it is a relatively simple and humorous sounding word, it may have many more colloquial meanings within families, friends or groups.
1) Jeffrey dropped a plate and it broke, he made a boo boo.

2) Timmy fell off his bike and got a boo boo, he ran home to mommy so she could kiss it and make it better.

3) "Lets stop at the next restroom we find. I gotta go boo boo"

or

"I made a stinky boo boo!"

4) "Have you seen Duane's new car?" "Haha yea, that shit is boo boo!"
by Laqueshus June 5, 2009
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