I got home from work and instead of immediately petting him, I stretched when I walked in the door. When I opened my eyes he had capsized. It was too late.

Most rabbits flop when they are happy and comfy, but Carl flops whenever he's been mildly inconvenienced or annoyed. Like when I don't pet him in a timely manner, or I turn my back on him, or when I leave the room (or look like I will), or my alarm goes off in the morning, or I offer him something he doesn't want. These things ruin his life and he can't take the stress, so he falls right over and pouts until I give him loves.