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1.
The act of expressing some outrageous, energetic and exacerbated joy or acknowledgment, as for the achievement or good fortune of another.

The most extreme way to express joy in the success or good fortune of another.

Generally used in a sarcastic manner, or in a derogatory sense.
Wow! That's amazing, you two got married on your first date, I'm sure it'll last forever, congratufrickenlations !
by Tyler C. Simpson, Esq. February 13, 2008