E-Mental
Someone who is totally ate up with the environmentalist movement
That Al Gore is like totally E-Mental.
Mental E-tardation
The physical state of the brain following consumption of ecstasy in which attempts at complex neural processes result solely in the self-realization of the tremendous mental toll ecstasy has on your basic evaluative skills.
The day after the rave my friend was suffering from severe Mental E-tardation and tried to put a hot pocket in the blender.