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To predict a negative outcome for a team or player that your friend likes but which you despise and has no chance of coming true and is completely childish.
...Dave - Tom Brady is a no talent ass clown and the Pats will not win a game next year.

...Ben - You're just saying that because you hate the guy and the team.

...Dave - And he's going to break his leg.

...Ben - Don't prognostihate on my team, bro!
by Slimypete February 29, 2008
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