this happen yesterday. I was at the University with some friends and my girlfriend, she is really pretty, long blonde hair, about 5'7, brown eyes, we were together, she told me that her arms really hurt because she made a lot of exercise the day before, I told her that I make the best massages, and I could massage her, she agree, and then I started massaging her right arm, I was going up to her byceps 'cause that the spot she hurts. So I couldn't resist and tickled her underarm she back off quickly and said "Stop, don't do this in front of them", I said "sorry", so I continued massaging her arms, on the next day the pain was over, she told me "Thanks for the massage, my pain is over", "Sure" I told her.