You know, for all the amazing Batman detective work, the way that he figures out that his right thumb has been taken over by a robot from the future hours before he's in danger of choking himself with it so he can turn it against its master or whatever, I think my favorite will forever be: "Because Clark wouldn't have known the right tire size for my bike unless he'd seen it outside with his X-ray vision." I know! That panel kills me.
I LOVE serious grown-up Batman remembering the time he rode his bike with Superboy.