My current girlfriend is a total size queen and when I put it all the way in, she definitely feels it judging by her facial expression lol.
Newguy..
Actually dude, the other night I was having sex and decided to take it out and shove it back in...a few times, like in adult entertainment lol. The next day she said she had blood in her pee! So yes, you can definitely cause some damage with a lot of length.