Sometimes you just need a little laugh — this one did it for me. I especially like the first comment:

Physics: “Sorry, cat. You can’t do that. There is not enough volume inside of the box.”
Maru: “You misunderstand. I am a cat and a box is involved. Physics no longer apply.”
Physics: “But…”
Maru: “Save your breath, as I am already inside of the box.”
Physics: “But…!”