I climbed down ladder we were using for building construction, and I put petroleum jelly on the handles as I went down to surprise the new guy who would climb down next
What in the world are you thinking? Does anyone else know that you did that?
Hah, yeah, no one else knows it yet, I think.
Well that gives you time to wipe it off then! You should not put slippery stuff like that on the handles of a ladder that is in use!
It's kidding around.
That's way too dangerous to be doing for a prank. Someone could get seriously hurt. I'm sure you don't want that do you?