(countable, colloquial, often childish) A mistake or error. / (countable, colloquial, childish, by or to young children) A minor injury, such as a cut or a bruise.

(colloquial, childish) To make a mistake. / (colloquial, childish, by or to young children) To defecate.

Alternative form of boo-boo

simple past tense and past participle of boo-boo

present participle of boo-boo

plural of boo-boo

plural of boo boo

Alternative form of na-na na-na boo-boo

Alternative spelling of na-na na-na boo-boo

(Canada, US, idiomatic, colloquial, childish, derogatory, taunt, often humorous) A taunt or putdown, typically used to indicate that the speaker believes he or she has beaten the listener in a competition or is better in some other way or in a general sense; or an expression of satisfaction that the listener has received some supposedly deserved minor punishment or misfortune (that is to say, schadenfreude).