1.) A small, hidden area of a haunted house that is used, by the management, primarily for the purpose of getting wasted during the haunt. This area, or "room" may also be used to facilitate any activity that needs to be "hidden from the customers or the owner of said haunt.

2.) A code phrase to signal a managers meeting at a pre-designated place at a haunt "ie fuckin boo as described above" to partake in mass consumption of mind altering substances mainly, but not limited to, beer, weed, cigs, pills, or liquor.

You see, myself and a few other loyal halloween freaks, have been in the haunted house business for about 13 years now. We design, construct, decorate and run the thing every year in October. Its a ritual. We scare the crap out of people for fun. And what do you think makes it more fun? Beinig wasted of course! Plus being wasted makes US that much crazier at the same time. The problem is that the owner of the haunt we run does not condone the ways of the Jedi, ie getting wasted. So a few years back we had some left over space after construction and decided to make our own little hideout from the powers that be. Someplace we could do our thing and not fear the wrath of the darkside. Somehow the term "fuckin boo" came to be as a signal that we were meting in that room to slam a few beers and smoke a few joints. You see we all have waklie talkies, including the boss, so when you hear "fuckin boo" over the airwaves you know to meet there. Soon the room itself became became fuckin bo and so it was and shall always be until the end of days.
<crazy clown fucker pops out of a curtain swinging a bat at invisible children>
<haunted house customer pisses pants an starts crying>
{from the radio in clown's pocket} fuckin boo homie!
Clown: Hellz yeah
<clown goes and gets crazy burnt up lookin dude>
Clown: Hey Blake! Fuckin Boo!
Blake: Yeah! Lets do this
<crazy clown and burnt dude procede do the hidden room in the back and get fubar.
by Russ Bus September 22, 2007
Get the fuckin boo mug.