What is the biggest cock that has penetrated your wife?

[Dongster]

The longest was about 12" but rather slim. She didn't enjoyed it much because it hit her cervix.

The thickest on the other hand...
We were having a short vacation and we met a guy in a bar.
My wife could tell by the bulge in his loose trousers that he was probably well endowed. He was also a nice fella so we took him with us to our hotel room and it turned out he was around 9" but very thick.
She had some difficulty taking it all in. She was streched as never before.
He fucked her 2 times that evening/night and she came 5 or 6 times. The next day I woke up while my wife next to me was getting pounded again. She had 3 orgasms before he flooded her pussy.