How do you know if someones wearing a thong?

you can ask them!!! or you can tell by the line going around the waist or up the bum!!!

another funny thing is drop something and ask them to pick it up, or ask if the can touch their toes and keep an eye on there but!!!

i would definitely wear a thong and I'm and 11 year old boy, i jusk think it feels nice to be honest!