Mine isn't that "mad"
But at Waterworld in York (See report on my profile!), it was alarmed and all the ground floor entry points had no handles or were boarded up. So after some sleuthing a few days before, I noticed an upstairs floor had a smashed window.
So to get in, we needed a ladder of some kind (It was not high enough to reach, even with a leg-up)
As the site was surrounded by those slot-together construction fences, i had an idea - we jumped the construction fence, saw a big stack of these fences, carried it over to the wall, rotated 90 degrees and wedged it on a pile of rubble.
Used the fence as ladder rungs, reached up on my tip-toes, and managed to pull myself up and in. My accomplice also did the same, and we pulled the fence up into the window. The site was being patrolled so we didn't want it to be obvious on the outside.
Exit via firedoor. Was very satisfying, I wish I had a gopro on as it would have looked quite smooth and well-done haha