shit the bed
When something just goes wrong...really, really wrong. "'Shyte' the bed" in limey.
1) Sorry I was late. My car just shit the bed on the way over. 2) If your friends shit the bed and don't get us out of Harlem in the Klan costumes... 3) Last night I thought I had to fart, but I shit the bed instead. Use "Shyte" the bed" if you're limey.
By Tenacious Faulker