Normal underwear.
super man kind!
A thong
One can purchase underwear at any clothing retailer. One can purchase underwear at their nearest clothing retailer in the underwear section of the store.
plastic or absorbent underwear
In men's underwear, generally, there is some kind of fabric, a comfortable waistband and a Pocket for my package.
Boxers
thong
Boxers.
briefs
breifs
none