Superman on magic silver K, from Superman/Batman #46. He feels and acts like a kid, and sees everyone as chibis.
BROWNIES! In North Dakota!
This whole story arc was an incredible amount of fun, but my other favorite part was probably at the very end, when Superman is like “Well that was a weird coupla days, but I feel way better now. I guess everybody needs a vacation now and again. Except for you, Batman!”
And then Batman stands alone and sad on the observation deck and I laugh because superman’s a dick.