To the OP, have you thought about if you slap a woman in the face with your dick it will leave a mark...IJS....she might like it but boy will it hurt "Both" of yall. ..lol
One lady I know bruises quite easily. She doesn't know where they come from. Another I know plays sports and is frequently scratched and bruise. I went to lunch with a dainty coworker today and she was scratched and bruised from a mudrun she did last weekend. I had a bruise on my own arm from sex with a civilian for the last couple of weeks. I didn't even know I had it until I saw it in the mirror.
Unless they look like they just survived a night with Jason Voorhees I don't question it.
I always have bruises on my legs. I just bruise very easily. Thin vein walls. I usually don't even know where they come from...corner of my desk is main culprit.
I got up from my knees a few hours ago and I ramed my knee right into the bed frame. There's going to be a bruise tomorrow.
I also dropped my iPad on my foot earlier...