The typical excuse that a male uses when he's unable to attend a male-oriented social function (e.g., poker, drinking, NFL Sunday, etc.). It refers to his girlfriend's/fiancé's/wife's stranglehold on his manhood, leaving him unable to decide for himself when it comes to anything in life.
Bob: Hey, Timmy! You playin' Texas Hold'em tonight with the guys?
Timmy: Sorry, Bob, my wife's got the ol' Shorie Chokehold on my junk. She wants me to be well rested tonight so that I'm totally focused on helping her practice her breathing at our lamaze class tomorrow.
Bob: Damn, Shorie Chokehold's a killer! Well, maybe next week, ya douchebag!