I had something because of my size last week in fact. My wife usually has no problem accommodating me, as she's been told (during pregnancy examination stuff) that she has an elongated and oddly shaped inside bits, making it difficult for them to find her cervix, which might be why I've never hit it. Also, I usually give her head for ages before putting it in, otherwise it never goes in. And she's tight as a mouse's ear.
Well, lately she's taken to sometimes wanting the cock in first before she has the head, regardless of difficulty. It takes quite a while of gentle but forceful pushing, but it does go in eventually. I think she's enjoying the pain!? However, last week she told me to stop because she said it felt like I was ripping her open. I had to wait a minute not moving until she was OK to carry on, but I had to be very gentle for a few minutes and she said she felt sore afterwards.
I do remember though with one of my first girlfriends 30-odd years ago and way before I knew I was big, I did just shove it straight in her one time, being young and eager. She let out a yelp and told me to pull it out and clutched her cooch like I'd just kicked her in it. She told me after that I can't just push it in like that and got in a piss and sulked for the rest of the morning. She split up with me not long after, but I think it did me a favour as I then resolved to always make a girl nice and wet with my tongue first before I put it in, and I think my tongue ended up always getting more appreciation than my cock after that, and girls seemed to handle my size fine. I think.