A sharp pain in the tendons of your arm that you get when you play fooball too often. It disables you from easy, everyday tasks such as making a fist, doing push-ups, or simply masturbating. It feels like your tendons are very crusty.
Guy: "Ah man, I have the worst foozballitis. My tendons are all crusty!"
The dance in which one forms fists with both hands and holds out both arms and pulls them back and forth while moving the penil area forward and backward like your humping an ultra horny version of Pam Anderson or something.
Person: Dude, did you see Jed at the dance last night? He was doing the harpoonski by himself in the back of the room for six straight hours.