Socks off for twister?

Hi there! Some days ago, I was hanging out with a few people at my friend's place and we decided to play twister. That game where you have to put your hands and feet on those colored dots. I was wearing socks, so my friend told me and everyone else to take them off in order to have bare feet. I said I preferred to wear socks, but she insisted that everyone should remove them to avoid slipping. So I complied, but it felt weird.
Is this normal that you need to have bare feet for twister? Or is it just her being weird?
Socks off for twister?
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