To joc on someone is to find them physically
attractive and to want to be physical with them. It is similar to crushing on someone, but this is less school girl and more like you want to jump them.
When you joc on someone it means you really dig them physically. This has
nothing to do with
personality.
Me: "Hey Anna, is that dude still joccin on Emily?"
Anna: "Yeah, he totally gives her the look every time she's around, I think I may have even seen him lick his lips"
Almost
every girl in
the world right now is joccin on
Taylor Lautner.