My friends pantsed me in my first thong. Should I be mad?

So my mom finally let me start wearing thongs. So I wore one to my friend's sleepover, they must have seen it sticking out of my pants so they decided to hold me down and take my pants completely off. I had to chase them around the house in my thong to get my pants back. My one friends parents and brother even saw. Should I be mad at them or were they just having fun?
My friends pantsed me in my first thong. Should I be mad?
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