(Note - heavily accenting the 'Ch' in Christ always adds great emphasis upon deliverance of the phrase.)
First began to circulate in Essex, after a truly remarkable display of football acrobatics during a friendly game of 6-a-side, the phrase has now picked up a few more scenarios to be used in.
2? 'Jesus Shit the Bed Christ, that truly was the fucking funniest thing I've ever seen.'
3) 'Jesus Shit the Bed Christ, did you just see that bitch spit a Melon out of her arse?!'