What does it mean when a girl asks you to feel her legs?

This girl at work asked me to feel her legs for prickly hair at work today when we were on brake. Her and I talk all the time and she has playfully touched me and punched me before. We talk all the time at work and we both laugh a lot. She even told me her and I are like best friends. Do you think her and I are just friends or do you think there could be more there?
What does it mean when a girl asks you to feel her legs?
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