lightgun

A wired console gaming peripheral shaped like a gun that was powered by the console. It uses light detection, on the NES, when you pull the trigger, the screen goes black and the target became white square.

However, on the Sega Master System and beyond, pulling the trigger causes to flash the screen entirely in solid white.

Sadly, retro lightguns cannot work on LCD screens, unless we have the Sinden Lightgun, a camera-based lightgun gaming peripheral that can finally works on (not only) LCD and projection screens.

Kid: Are you literally shooting ducks?

Gamer: Yes, with my Nintendo Zapper. It's a lightgun persay.

permanent pregnancy

A state of pregnancy, either with fetus, eggs, etc.; that remains with the bearer (gender of the individual does not matter) indefinitely. Gestation may or may not continue, but the act of whelping does not occur.

Plouc: Thank you for releasing me, Spyro. My baby is getting active in my belly. Can you get some ice cream with pickles and shrimp drowning in ketchup for me, please?

Spyro: Hey, wait a second... Are you... pregnant?!

Plouc: I have permanent pregnancy, and I am also an andromorph.

bowseritis

A most deadly virus first shown from the Nintendo DS game, Mario & Luigi: Bowser's Inside Story. Bowseritis (or the Bowser Virus) are suppose to infect a person to the others causing them to transform into a Koopaling species (depending on their ages, sizes, etc.) or becoming an original character with the exact same reference as Bowser.

Doctor: "Yes... Do I see it? I do. And it emerge? It did. A most deadly virus that will surely spell your doom... It is...called..."
*Bowser's face shows up in the crystal ball*
Doctor: "BOWSERITIS!"
Bowser (in the crystal ball): "MWAHAHA!"
Bowser (from behind them): "Somebody page me?"