shumpy

enthusiastically pessimistic
Usually is used when someone is very willing to do something, and is very sure that the result will be abysmal.

Bill: "Hey, do you want to go with me to the beach? I'm going to try to learn to surf."

Hank: "Hell yeah I do! I'm sure you'll fail miserably, this will be awesome to watch!"

Bill: "Dude, why must you be so shumpy?"
by Vikks July 08, 2010
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