COF maybe?

Does any provider allow this and if you don't why is it a big deal?.... what do the male hobbyist think?

I have done this one time with a "friend" I was very comfortable with, just to see what the hype was about and let me tell you what lmao... NEVER AGAIN!
It turned out like I was in a Peter North porn! And the repercussion was a catastrophe. Up my nose, blinded, and in my hair. Something about Mary-ish!

That seems to be the case with most providers they have had a bad experience. I haven't done it but if you watch porn it seems to be the thing to do and I don't understand why haha

My ex (pre-hobby) actual had bad aim and I got hit in the eye and oh my damn, it burned, burned, burned so bad and my eye was red for 2 days. It wasn't intentional but I agree with SM, never again. No thank you.