Nike boxer brief - picante red

It was way too small.it seemed to have been falsely advertised.i ordered medium as shown on the selection option of sizes.but when It arrived it was a youth (M)which I didn't understand because doesn't youth sizes have age predictions?and not letters (s,m

I don't like the size cos it's too tight, I choose large bit it's fitting like small

I was so disappointed with this purchase. I wanted adults underwears, and it came as a junior size. This information was not on the advert. Very disappointed.