Why most of the super heros of hollywood put underwear outside of their pants?

As we all know being a super hero is not so easy.u have to there where crime falls.they have to live a normal life too.so to keep their secret identity they have their own costume.N to wear dat costume in hurry they usually do mistakes and wears underwear outside.

it might b beacz super heros as they r pretty strong...wen they gt erect may b normal underwear is nt big enough tats why they use pants instead...lolzzzzzzzz...juust kiddin

superhero dont have time to change thier costume so in hurry they mistakely wore underwear outside their pant and than they thought its a new fashion everyone wear underwear inside we super heros should wear underwear inside so they wear underwear outside

When someone is popular you get sponsers all around.u can see those popular how ever try to show the tags of their sponsers.So those superhero are sponsered by underwear company and to promote those companies they wear underwear outside to show it.