To get on top of this cabinet, he has to go in the shower, jump up on the built-in seat, jump up and balance on the far end of the top frame of this glass shower door shown here, walk on the itty bitty thin frame over to the other end of the double door, and then jump up on top of the cabinet.
Pixie likes to do this, too, so he was kind enough to show how it's done while the flashy box thing was in use. He also was kind enough to stick his tongue out at Bugsy (you may need to bigify the picture to see that).
This usually only happens when The Mommy is getting ready for the "work" thing in the mornings, and the way the bathroom is set-up, her back is to the shower door and it's not reflected in her mirror. So the first she knows of it is with the loud rattling of the door in its frame when the leap from seat to door occurs. Always makes her jump, which is good for bonus points!

