I've literally shat the bed just now.
Did you have nightmares that scared you so much ?
No. Can't I just shit in my bed?
Well, I think it is quite disgusting to poop in the bed, you should go to the bathroom before you go to sleep. If someone learns about this they will mock you for a long time.
I'm not scared of shitting in my bed, I own this shit.
It's not very hygienic to shit somewhere other than bathrooms. It's a bed you everyday sleep on so you should not poop on it.