That is totally a fake cock because go back to the part were she is sucking his cock from the top side towards the end of the video you can see were the fake balls go over top his real balls well that is the way it looks to me
I've done 9 before, had a huge head. Loved the feeling of huge head stretching my throat. I would try 13-14. It pissed me off, he said he was going to cum and pushed me away, fucker!