Used ironically in a situation where one had the opportunity to scare someone by speaking suddenly.
An exclamation used by a member or many members of an audience, as at a stage play or sports game, to indicate derision or disapproval of what has just occurred.
Noun
A derisive shout made to indicate disapproval.
Verb
(intransitive) To shout extended boos derisively.
(transitive) To shout extended boos at, as a form of derision.
Noun
(US, African American Vernacular, slang) A close acquaintance or significant other.
