Vaffanapoli 

This word doesn’t exist in Italian. So if you use it you are such an idiot and you are probably American or a fan of “friends”.

The right word to say : “Fuck off / Fuck you” is “Vaffanculo!” and isn’t necessary to do the typical hand movement (p.s. in Italian we don’t move in this way the hand)

“ I can’t go out because I have to finish my homework, vaffanapoli!”
NO Vaffanapoli YES Vaffanculo

Vaffanapoli by LaMatii May 18, 2021

Vafanapoli 

t's a more 'polite' way of saying vafanculo, the Italian obscenity meaning "go do it in your ass". Vafanapoli means literally "go to Naples", with the implication being that everyone in Naples does it in the ass.

Jack: Mic, you are not strong enough.
Mic:That's not what your girlfriend said last night.
Jack: Vafanapoli!!!

Vafanapoli by mayue31 August 11, 2010