Hmmm... the biggest cock that was ever in my pussy was 11 inches. He did not come inside of me but he did fuck me bare back!
The biggest cock that has been in my ass was 9.5 X6 and he did cum inside of me, many times!
I fucking loved it! believe it or not, it was easier to take the big one in my ass than in my pussy. I guess you don't really hit the bottom as hard haha...