loony tunes

/L UW1 N IY0 T UW0 N Z/
noun
  1. 1

    A silly or crazy person; a person whose actions are unpredictable and irrational.

    โ€œSome loony tune parked his car in the no parking section.โ€

adjective
  1. 1

    Insane; crazy

Source: https://en.wiktionary.org/wiki/loony%20tune, https://en.wiktionary.org/wiki/loony%20tunes