Slang for the Wii Remote Jacket, an add-on for the Wii remote that is supposed to "increase" the grip on the Wii remote, and also resembles a condom. Supposedly, the Wii Condom is also supposed to protect the Wii Remote from getting AIDS from the sensor bar.
Dude 1: "Dude, let's play WiiSports!"
Dude 2: "Yeah, but first I have to put on the Wii Condoms on the Wii Remotes so then they don't get AIDS from the sensor bar."
Dude 1: "Lol!"