Ni paper-mate

Ni paper-mate (nee • pay • per • mate) is an expression that would make you sound like a proper Chilango slang speaker. It is a derivative of ni pedo (lit. "not even fart") which is an interjection to convey frustration and solidarity, similar to "what can you do about it!" when actually nothing can be done. Paper-mate is a brand of pens and retractable pencils.

Example:

Demóstenes: Iba en mi democrático, me cuajé y me bajaron el billuyo de la quincena.
Cucho: Ni paper-mate. Al monte pío.

Demóstenes: I was riding the bus, fell asleep and my pay of two-weeks was stolen.
Cucho: What can you do about it! Now you gotta go to the pawn shop.

Paper-mate ad, 1980s.