Same thing happened to me. I was at Wal-Mart and this little old lady pushed her buggy into my truck, and then proceeded to open her car door against it.
I immediately ran around my truck, kicked the buggy out of the way and pushed the woman down. I managed to get her into a headlock, and then rolled around behind her with a full nelson hold. She squirmed out of it, and countered with a fairly heavy punch to my jaw, but I held my own. I stomped her foot, and while she was jumping around on one leg, I delivered a round-house kick to her blue hairdo. She lost her balance and fell on the ground again, and I thought at this point I had her, but....She was a tough old bird, however, and she swift kicked me with those black orthopedic shoes..yeah, you guessed it...right between the legs with a solid shot to "my boys."
I was doubled up on the ground in the fetal position, about to throw my guts up...and she picked up her purse and swatted me across the back of the head, said something about my momma...and then got back into her Buick.
I decided I would pay for the touch-up paint myself.