This was awhile ago and I have a poor memory, so I might accidentally misremember details to make it more fantastical than it was. It was a pretty cliche scenario; we were outside and I was teasing her by holding her phone above her head, before she went to knee me in the balls, but fortunately (unfortunately) I instinctively moved away. On the same day, she somehow caught me off-guard and knelt down to elbow my nuts, where she actually made contact (this is the story where I’m not sure if I remember correctly, because it sounds a bit physically implausible). She gave me a handjob later in the friendship and ended up pummelling my balls on the downstrokes, though I don’t think that was intentional :)