what is the meaning of jinx as a game. i have seen it several

Jinx is like a curse. People will say jinx if they say something at the same time. Also if someone expects something to happen and says it, the opposite will happen. Expectation > Dissapointment Ex. Tom and Harriet: I have a dog. Tom: JINX I think you were looking for this: *at a football game* Tom: The Hawks are soooo gonna win. Harry: Don't jinx it man.
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