Also known as Gamer's Thumb or Nintendo Thumb, Nintenditis is when some part of your thumb or wrist becomes irritated or swollen due to excessive video game playing. A person with Nintenditis will feel pain or discomfort when bending their thumbs or moving their wrists. Note that this can happen with any finger, and not just the thumb.
I concluded that I had Nintenditis when I noticed a constant pain in my thumb during a game of Super Smash Bros.
1. A sharp cramp caused by playing video games
2. the act of calling out sick from work to stay home and play video games.
1. By the time I got to level 9 on Donkey Kong, I was suffering from severe nintendinitis.
2. When the new "Grand Theft Auto" game was released, I had to call out sick due to my nintendinitis.