What's your worst nightmare?

Good arm to get the frisbee up that high.

Go through the window

I mean, this makes me uncomfortable, but it looks quite likely that there's ways out, so it's far from my worst nightmare. Also I apparently discovered the world's first gravity-defying ladder (admittedly it had some quirks to work out), so not doing too shabby

Strangely my biggest fear is being trapped somewhere forever, even though that's not possible