Slang term for Anal Sex. In the sport American Football, blitzing the A gap means to send in a defensive player, almost always a linebacker, through the small space between the center and the left or right guard.
If someone hears you mention blitzing the A gap and assumes it's dirty slang, chances are you can convince them that you're talking about football.
Man, that linebacker sure can blitz the A gap of that offense.
The most convenient moment for a man to take his socks off before engaging in sex. If the Sock Gap is missed, then the man will end up naked except for his socks, which will ruin the mood.
The Sock Gap is rumored to happen some time in between removing the man's shoes and removing the man's trousers.
Used as a taunt/warning call prior to the action of sticking ones leg out with the aim of tripping a colleague up. Not necessarily to make him fall completely over but just for him or her to break stride rhythm and look like a "twat" in front of tidy snatches or rugby jocks they are trying to impress. Scream this at the top of your voice before the fatal trip.