Usually the brother of a gamer or someone who doesn't get outside much, someone who goes to the neighborhood pool every single day it's open just to say they get outside more than you.
Steve: Dude, my brother's such a pooly. Kid goes to the pool every single day just so he can say he's gotten out more than me.
Joe: Yeah, I hate those mother fuckers.
In Anthony Burgess's novella, A Clockwork Orange, it's the "nadsat" slang version of saying you're sorry. Synonymous with "apologies" as in "my apologies".
Combines poly (from the Greek polus "much" and polloi "many") with bit (binary digit).
An alternative to the term non-binary gender which acknowledges that it is possible to count above two in binary so long as you use two or more bits. For instance with 2 bits you get 4 genders, 3 bits 8 genders, and 32 bits you get 4,294,967,296 genders. In general, with n bits there are two to the power of n possible genders.