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