the only thing I can think of was when I was at gym class, and the teacher had us all climb the bars

I remember getting to the top and thinking... ****

I'm not going to make it down.... the bars are going to break, that or I'm going to lose balance- then I said a little prayer...

and made it down- or rather, the teacher decided to put a beam across where I was standing, giving me easy access back to the ground (not easy access, but better access)