Usually due to a lack of potassium, it's when your leg tightens up, causing an extremely painful sensation. Immediatley after it's over, your leg feels really good, though.
More of a 'code word' or 'heads up' for a Camel Toe. You cannot always point out a CAMEL TOE loudly in public without drawing attention. Instead you mudder the name "Charlie Tango ".
Charlie is slang for the North Vietnamese soldiers during the Vietnam War. In the movie Apocolypse Now, Sgt. Kilgore says this to some of his soldiers when they hesitate to surf in a certain area referred to as Charlie's Point. 'Charlie don't surf!' is his way of saying to screw the enemy and go in there anyway. Be fearless.
'Charliedon't surf' he said as the group entered the No Trespassing area.
Rhyming slang for one being clean from addiction but not necessary seeming so. Can also be a sarcastic statement when someone is not clean and poorly attempting to hide their chronic substance abuse.