Ballbust at work

I work at different warehouses on different days of the week, on Wednesday and Frida, the warehouse I’m at has a very hot 22 year old woman. We have a very laid back work environment. Shr and I have quite a bit of playful banter back and forth. A couple weeks ago she smacked my hand when I pressed a few random keys on her computer while she was typing. She was later working in the back room and I came in and (after checking out her cute round little ass) I started picking on her again. Then I made the comment, (hoping to give her ideas) that I should be careful picking on her or she might hit me in the nuts. She smiled at me and said, “You never know.”
Last week, Wednesday was uneventful. Friday, however, my wet dreams came true. First, she caught me checking out her ass, and pretended to make a big deal about it. Then I again hit random keys on her computer while she was typing. This is where she punched me in the balls. I doubled over at the initial impact, then stood back up and had a major boner. She began giggling and said, “You really liked that didn’t you?” I told her yes, I find it hot. She giggled again and told me she’d be happy to help me get hard anytime going forward, the punched me in the balls again. This time, she hit just right to drop me. She giggled again and pointed to the bathroom and said, you might need to go in there and take care of ”that.” I got up and did. I can’t wait to see her again this week.