>>2438475A bit more than 17cm. And penis comparison always get me hard because when I was in college I was invited by my roommate's girlfriend to join their sexual activity and we quickly discovered she clearly preferred my 17 to his 12.
The first thing she did when they broke up was to ask me for some rebound sex. She also told me that when they were together, her preferring my size was a real couple issue and he wanted to stop the 3way stuff, but she insisted on doing it again. Fun slut.