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1.
The act of playing Minecraft. Usually refers to someone that is hopelessly addicted to Minecraft. Generally is used when someone plays Minecraft for hours on end.
Loren: "Hey man, what are you doing today?"
Tyler: "I'll probably just Minecrafterbate all day."

"Hey bro, you and Ryan should come over and we can start a circle jerk of Minecrafterbation."

Loren: "Have you seen Tyler lately?"
Ryan: "No, I think he's been Minecrafterbating for the last few days."

Tyler: "Dude, my arm is so sore, I was minecrafterbating for like 10 hours straight today!"
by PlusOn3 May 20, 2011