I wouldn't call this an injury, but I told a WL that she can bite me as hard as she can.

She enthusiastically did. Multiple times. Over several bookings. I had a lot of black and blue, bruised hickeys all over my body, from legs, up to my neck. And she re-bit past bitemarks, deepening the bruising.

Took me more than a week before I could put on clothes without feeling much pain. I regret nothing.