An expert engineer class for Team Fortress 2. One who can ninja through the enemy offensively to create a dirty sentry, or find a nice home defensively that the enemy can't overcome.
Short for "Ninja Invited" (see Also "Ninja Invite")
A term in on-line gaming, especially World of Warcraft. It's the process of inviting someone to join your group (party, raid or guild) without politely asking them first.
"Sorry, Honey, as soon as I logged on I got Ninjavited to the raid"
"We need someone to dps, just ninja-vite someone from LFG"
The act of quickly minimizing a computer window when someone else enters the room because they do not want the other person to see the contents of the window, especially if one is looking at porn on their computer.
Dr Venture: "Brock, what did you just ninjamize?"
Brock: "Uhh, I didn't ninjamize anything."
*Dr Venture walks around to Brock's computer to get a look for himself*
Dr Venture: "Ohh my God Brock! more porn?"
Ryan: "Where have you been?"
Josh: "Sorry I had to ninjamize my World of Warcraft window because my mom came in my room and I'm not supposed to play right now."