When somebody in the group chat refers to his Mrs ‘shutting her bitch mouth’ with the typo “She can shit her bitch mouth”.
The best looking of the group, immediately jumps on “Shit the cunt”
“My lass thinks I’m having a midlife crisis. She can shit her bitch mouth”.
When you fail miserably, usually with style, on a given task. Most commonly used when you're given an advantage and/or something easy, and still manage to screw it up.
John: Boy, you really shit the bed on that one. How do you lose a 4 v 1?