Why do random girls accidentally bump into my arm?

It's been happening for at least a couple of years now. I swear I have random girls bumping into me at least once when I go out on a social setting. Some were pretty hard bumps too. They would be considered pretty blind if they hit me by accident becuase most of the times I try to move away a little like what people would normally do. Yet I still get hit.

I am starting to feel puzzled when this girl who was working at a bar, bumping me three times. One of them was hard enough to shake me up a little. Also, she would walk around me a lot.

Look, I am just an average guy. I am not super hot. There are not many reasons to try and have skin contact with me on purpose.

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+1 y
I am not making this up. If I am, I wouldn't be posting this. The girls who bump into me tend to be not bad looking. They are not drop dead gorgeous, but above average.
Why do random girls accidentally bump into my arm?
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