Do not do this. Toasters are not made to be used sideways. At best you’ll melt the probably plastic sides of your toaster, at worse you’ll burn your house down.
Both, I think. Iirc the outside was a plastic shell that clipped to the metal toaster. It caught fire when the overfilled tortilla started dripping cheese onto the heating coil.
I don't know if I was more upset about the fire, losing a toaster, or not having a succulent quesadilla dinner.