toaster

No really, burned. You left the bread in too long.

From the Reddit submitter:

I set up continental breakfast in a hotel where guests constantly set croissants on fire in the toaster... My boss put this up in our kitchen after I suggested we have a class on how to use a toaster (I'm Brendan).

Related story: a guy in my high school science class stuck a pair of scissors in an outlet. We called him "Sparky" for the rest of the year.

Seriously, they should do another Brave Little Toaster movie where he's trapped in an office breakroom and has to listen to people whine about their job all day. Eventually all of the events shown on the sign happen, and for the finale he has a fight to the death with the fax machine. It can't be any worse than the premise for the sequel they already did: