A military term for the moment before a bomb explodes, as opposed to "right of boom" which is after - based on a left to right timeline. Popularized by Washington Post writer Rick Atkinson.
The Pentagon is putting a grip of money into getting left of boom with those wily IEDs.
Person who drives slow in the left hand lane or drives the same speed as someone who is the right hand lane. Either way, there is no chance to pass. It's a play on words for "left laner."
That leftlamerneeds to move their ass over so I can pass.
a rare breed of savage who is ambidextrous (or slightly better with their nondominant hand) on the beer pong court and specializes in hitting the last cup creating a nothing, but beersound.
Kid: "How'd you do tonight?"
Sav: "Right or Left handed?"
Kid: "Motherfucker, I forgot you were Left Cup Lance."