also: ぶーたれる
ichidan verb, intransitive verb
Colloquial and slightly childish way to say someone is whining or complaining, often with a sulky tone. The ブー mimics a pouting or buzzing sound.
弟は宿題が多すぎるとブーたれている。
My little brother is grumbling that he has too much homework.
またブーたれてるの？いい加減にしてよ。
Are you griping again? Give it a rest.