A Spanish sounding term that literally means nothing. It is commonly stated in a childish voice. It is used to mess with people, i.e., prank calls, social pranks, drive through pranks.
Fast food worker: Welcome to Fast food restaurant name how may I serve you.
Costumer/prankster: chupapí muñañyo?
Fast food worker: Pardon?
Costumer/prankster: chupapí, chupapí muñañyo.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.