Freaky Sex with a hamster, or someone that resembles one. It usually includes various positions with hamster porn in the background, lots of squealing and some fur pulling. Usually does not include foreplay, or similar. Most of the time they include tards, animals, strobe lights
The insult that one stupid skid homie from a hick town gives to another stupid skid homie from that town when he deems him to have done something foolish. (Because hamster's brains are small, eh.)
"Ya fockin' hamsta brain, you smoked the last smoke and the fockin' store's closed, eh."
"That fockin' hamsta brain, he knocked up Shelley AGAIN."
The Gaijin server hamster is a legendary creature that powers up the War Thunder servers with his hamster wheel. Sometimes he dies or faints, crashing the game until it gets replaced.
Player 1: "Man, my game just died out"
Player 2: "Must've been the Gaijin server hamster's fault