A fork of Rural Dictionary
A Pokemon card/creature resembling a snake made out of rocks. The phallic nature of this creature was noted in a sly reference in the manga Aoi House.
Is that an onix in your pants or are you just happy to see me?
In Pokemon, an Onix is a long, thin character made of a bunch of different rocks. Therefore, when you take a crap, and it is whole, but looks like its been broken up into a bunch of little balls all clumped together, you have officially Shit an Onix.
Damn, Omar, I've been holding in this crap all day. I feel like I'm about to shit an onix like a foot long.