Quite simply, instead of being an attention whore, one is addicted to limelight from Tetris and playing it all the time, hence being a Tetris whore.
Guy 1: "Woah, he got up to a 1000 tetris matches in a month! I barely have 800!"
Guy 2: "Geez, you guys are such Tetris Whores."
A jokey insult to a woman. It suggests that the woman has so many penis' in her are one time, the only way she can fit them all in is to play it like a Tetris game.
Can be changed for men to "Tetris Bum Whore"
A: OMG that girl!
B: I know right! She has so many men at one time, she has to arrange them around her and fit the penis' in like tetris blocks!...the tetris whore!