my friend did this at a sleepover at my house, and the cheese stuck to the sides, so that whenever we toast something smoke comes out of the toaster and the smoke alarm goes off in our house. Screw you, lifehacks.
Most toasters are on a spring loaded system that push them 'up' when toasted, but since it's sideways, gravity won't pull it back into the toaster, thus it falls on the floor.
Pew!
(I wasn't the one who downvoted it)