Why Superman Wears 'Underwear' on the Outside of His Costume

Why does Superman wear the underpants on the outside? - Quora

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Ever wondered why superheroes wear underwear on the outside

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Why Superman Wears His Underwear On the Outside of His Costume : r

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Why does Superman wear his underwear outside: ever wonder? – Ugees

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dc - Why does Superman wear his underwear outside his pants

Finally learned to wear underwear inside, Superman