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When a facepalm (or any of its usual variants, such as the facedesk or double facepalm) is not sufficient enough to convey how painfully stupid something is, a fatalpalm may be executed.

The fatalpalm is similar to a facepalm, except it decapitates.
I don't want to live on this planet anymore. *fatalpalm*
by Ganzfeld_Modus September 19, 2013