Apparently, Mufasa was an indoor/outdoor kitty before... he's now got his energy and "routine" back in order, so he slept all day yesterday, only to stay up all last night, wanting to go outside.
Of course, that's not going to happen. Although, his desire might help in leash training him, like I want to try.
But, he had to jump in every single window last night, jumping through anything in his way, and then continuously trying to slide them open, and when we got up to pick up whatever he threw to the ground, he'd run to the door and whine at us.