I have one on my hip area. It hurt but it was bearable enough to count the tiles on the ceiling so I didn't think of the pain but when he started to do where the bone was, it hurt a lot more and wasn't as easy to take my mind off. My leg started to tap loads both out of nerves/pain and I had to try and stop it because it was distracting the guy.
On a scale of 1 to 10, I'd say it was about a 7.