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 humanmother, 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.
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).