have you ever stepped on glass?

i have and it hurts!

I fell on glass. It wasn't bad enough I fell off my bike but my elbow had to be on glass too. 

i stepped on a small piece once, it wasn't very pleasant

Sliced my big toe in half on a pane of glass. 14 stitches.

never, which is more than surprising 

Yes.  With my shoes on.

Yes, but surprisingly, it never cut me. Just one piece dug in a little bit. Was just a little scratch though.

Yes. 
 
And a small cactus.

Nope

I've gotten small pieces stuck in my foot before, worse than wood splinters.

I had a small piece of glass stuck at the bottom of my big toe when I was little ahh traumatizing times.

No, never. I stepped on some with shoes on, but not bare footed.

a waiter dropper a glass next to me at a restaurant, and i discovered a piece of glass in my foot about 6 hours later. that hurt like a mother...

Yes, yes I have. Stepping on a nail is worse though, trust me. 

with shoes on never without shoes.

Ohhhhh i can feel the pain just from reading, dude! Damn!