O'Neill: "Better use two of those..."[C-4 Charges]
AF Guy: "Sir?"
O'Neill: "It's a [makes air-quotes with fingers] 'Blast Door'?"
-SG-1
When some wild-eyed, eight-foot-tall maniac grabs your neck, taps the back of your favorite head up against the barroom wall, looks you crooked in the eye...