17 year old wearing thongs

I'm 17 & I have a lot of underwear including thongs. Lately I've been trying to keep my dirty clothes out of my room so my dog won't get his hair all over them. My mom was washing clothes & a pair of my thongs ended up in the load. My mom didn't say anything bad about it she just gave them to me to put into my drawer but I still felt embarrassed & awkward. How do you feel about a 17 year old wearing thongs?