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15.
an ugly guy or girl.
Stevie Wonder's first girlfriend, in the words of his friends, was a BUGABOO. Stevie thought she was "fine" (because he hadn't developed his blind other-senses yet,) but his friends had to set him straight.
by fuckyoubuddy March 26, 2005
 
1.
Gurl or Guy Who Dont Leave You Alone.
Callin You Up Every Two Minutes On Your Celly, and Just Dont Trust You Doin Nothin, You Say Your Out Wit Your Boiz And She Thinks Your Out Creepin With Some Other Trick.
by :::eQuatZ::: February 21, 2003
 
2.
overly annoying person that constantly calls or goes to your home uninvited.
Jeremy L. is such a bugaboo!
by sexqueen July 11, 2003
 
3.
Someone who is clingy and blows up your cellphone.
(Phone Rings @ 4am in the morning) I'm not answering that, it's that bug-a-boo again.
by Nyesha August 02, 2006
 
4.
An annoying stalkerish person who won't leave you alone.
Chick1:"Girl, your text tone keeps ringing off the wall!"
Chick2:"I know! Ugh, its this stupid bug a boo that won't leave me alone!"
by Mario! April 05, 2009
 
5.
bugaboo: noun. Clingy; blows up your cellphone, hijacks every facebook/myspace/twitter posting, coffee break, lunch hour, down time, and instant messaging moment of opportunity to the point of suffication, and sucking every miniscule amount of time and breathe you own thus inducing the need for separtation, and official string cutting ceremony.

clingy pest cling-on freak nuisance stalker
ie: "I can't believe that he/she thinks I need to spend every dang second of the day with him/her! A deserted island right now would be like winning the mega million powerball prize!! *gasps for air* HELP I CANT BREATHE, MAKE THAT BUGABOO GO AWAY!!!"
by gypsy_squirrel75 August 05, 2009
 
6.
An unfortunate event that occurs when you accidentally sit on your penis, and the tip pokes you in your butt.
Joe received his first bugaboo this morning. He's not having a good day.
by JoesPoliceRecord January 22, 2012
 
7.
A silly, affection term used to address close friends.
Goodnight, bugaboo. See you soon
by Frankie001 August 01, 2011