When billy busted a but in his girlfriends pussy he proclaimed "I shit the bed"
When one golfer plays a round with someone who consistently underperforms
"E, you shit the bed again!" - JT
Not just "fucking up really bad." Used to emphasize the way that the really bad fuck-up harms or humiliates the person who fucked up. The idea of shitting the bed is not just a) that the person intended to do one thing but instead laid a giant turd but also b) that the person laid that turd in their own bed and now has to lie in their bed of shit.
Darlene merely laid a turd by flunking the algebra test. Mike completely shit the bed when he cheated on the test and got caught and expelled from school.
After looking like possible superbowl contenders in the 2017 season. The Jaguars shit the bed in the 2018 season.
To get out of bed very early on a day where you would normally sleep in.
"You're up early! Did you shit the bed?"
When they lost to FDU they Shit the Bed
One night after drinking heavily, I decided to give myself 2 IV bags cause I was super drunk. The good news was that I woke up without a hanger, bad news is that Purdued the bed. They really Shit the Bed
Shitting the bed/shat the bed
To shit the bed is when you fuck something up so badly you hear it from the people around you for the rest of your life.
Tyrone really shit the bed when he told us about how he fucked a pineapple
-Jake
Oh you mean spongebob - John