na na na na na na

Phrase

na-na na-na boo-boo

1. (Canada, US, childish, colloquial, derogatory, humorous) A taunt or putdown, typically used to indicate that the speaker believes they 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).
   • ... is that the educators out there aren't aware of this, they don't know it or what?
     Ms. Bolinger. It's like na na na na boo boo, make me do it.
     [Laughter.] ...1992, Committee on Labor and Human Resources, United States Senate, One Hundred Second Congress, first session, Oversight on the status of special education in Iowa: hearing before the Subcommittee...