What if Batman's underwear is inside, not outside?

Underoos are back, and now they're for grownups

Did DC improve Superman by removing his underwear in Man of Steel, Batman v Superman and Justice League? - Quora

Look Back: Batman Drops the Underwear On The Outside Of His Costume

Batman Joy Ride PSD Boxer Briefs

Underwear of Power - TV Tropes

How do you prefer the Batsuit: With underwear or without? : r/batman

SickSix – Medium

Return of Underwear-Outside-Trousers Explained in Batman #53 [SPOILERS]

Why Do Superheroes Wear Their Underwear on the Outside?

Return of Underwear-Outside-Trousers Explained in Batman #53 [SPOILERS]

Batman and Superman wear underwear outside of costumes - Gen. Discussion - Comic Vine

Battle of the Bulge: Why We're So Fascinated by Superhero Codpieces, by Tim Grierson, MEL Magazine