polybook 

A collection of multiple or many books.

The library is made up of polybooks.

polybook by Brock22 November 8, 2017

Ponybook 

A space on Facebook where bronies pose as popular ponies from the show and as pony versions of themselves and famous people to interact with eachother.

I was talking to Rainbow Dash on Ponybook earlier.

Ponybook by ninjaassassensei November 28, 2011

Polybootistic 

Not conforming to one singular Booti, Not being loyal in a relationship.

Person 1: "Did you see Owen and his new sidechick?"
Person 2: "Nah dude it's fine, he's Polybootistic.

Polybootistic by ItsRainingFoxes August 13, 2018