what's the most challenging surface to wear high heels?

[Eigth]

I woke up yesterday morning feeling pretty good.
I had bought a new outfit for work,
this pencil skirt suit with my new 4 inch heels.
As I walked into the lobby of my job I took
3 steps and fell right on my ars.
This made me think,

what is the most difficult floor to walk across when wearing high heels?

[Braveheart_1]

who the fuk care's