Put the pie in the oven at 180 degrees?

My pie dish is circular, so what does its rotation matter?

Comic transcript

Panel 1:
H is disgustedly looking at a piece of paper that someone has poured ketchup on.
H: Ewwww, why is there ketchup all over my shopping list?
G: You told me to put it on there!
Panel 2:
H: Arrgh, I didn’t meant that ... well, you know, never mind.
I just wish you’d stop taking everything to literally.
Panel 3:
G is taking everything (written on a bag) to literally (written on a door).