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Very, very angry, and probably about to strangle you. It refers to Star Trek's character Mr. Spock, who can be a very pissed off alien if somebody dares mention his human mother, and therefore provokes an emotional reaction in him. It is not, under any circumstances, an advisable move.

First used by Brittany Diamond in her Star Trek TOS commentary.
If someone has to ask about Landrew one more FREAKIN’ time and NOT get an answer, I swear I will go CRAZY like a SPOCK who’s just had his MOTHER insulted.
by ronnachu August 18, 2009
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