pipyana 

She is the best girl in the entire world. She was also featured in one of unseenshadow13's instagram posts

Pipyana is amazing.

pipyana by unseenshadow13 June 7, 2018

Piphanatic 

People who are crazy about "pi" and memorizing the value of pi upto the first 50 digits

1. Crazy Amanda spent all afternoon trying to remember the first 50 digits of pi before going out on St. patty's day incase she gets caught for DUI and questioned. She is one of those Piphanatic!

2. Mike needs to get a life outside of being a Piphanatic and announcing he knows the first 15 digits of pi at the party.

Piphanatic by Kushangel March 14, 2013

Pipianaso 

A bonk; to be whacked by an inanimate/animate object/thing; background information: particular to Spanish slang

I gave my brother a pipianaso on the head

Pipianaso by Clinty Stahwood February 10, 2010