It's important to remember when running a game: No matter how bad things are for the PCs, there's nothing to say it can't get much, much worse.

Transcript

GM: The composter walls start closing in.
Leia: R2, you piece of beep-talking junk! What the snot are you doing?
GM: The dianoga releases Luke and flees.
[SFX]: splash!
[SFX]: < tong ding ting squee oomoo ping >
R2-D2: It worked! What are you complaining about?
[SFX]: grind... clank...
Luke: Okay, thanks, you can stop the walls now.
[SFX]: < bip doodle >
R2-D2: I just did.
GM: The walls are still closing in.
[SFX]: grind...
[SFX]: < blip ep-prow >
R2-D2: But it's a simple Boolean switch!
[SFX]: clank...
R2-D2: Okay, I override the control circuit. 17.
GM: The walls are still closing in.
[SFX]: grind...
[SFX]: < doop bloop bidizizizip zioo >
R2-D2: Crap. Crap. Crap.
R2-D2: I'm having a bad day here.
[SFX]: clank...
Leia: You're having a bad day??