Out to the Black
I have a friend who had a similar experience to this. She was actually a fencer but she bruises easily. There was a cop checking to building for something or other and when he got to her apartment, she was wearing a tank top and her arms were covered with buises. He was certain that her roomate (another friend of mine) was her abusive boyfriend. That fellow has actually had this reaction from at least one other cop in an urelated situation. It's kind of funny since he's more likely to beat up the abusive boyfriend.
Fencing bruises are nothing to scoff at, really. One can get hit pretty hard in fencing, especially in melees. I don't usually bruise easily and I have them a lot!
The thing about fencing bruises is that they are small and concentrated and happen a lot on your upper arms. They totally look like someone's been grabbing you roughly! Whenever I have big ones on my arms, I make sure to wear at least elbow-length sleeves to work just to avoid this sort of misunderstanding.
I did slip up once, though, and wear a sleeveless shirt. My boss saw a gigantic bruise on my arm and nearly hit the ceiling until I explained what I had been doing. Between that and the time I brought my sword in with me from the car to keep it warm, I'm pretty sure she thinks I'm stark-raving mad.
sweatdrop