>>149687159>>149688278>boxers or briefsHe's wearing a dancer's belt there
and has always worn a dancer's belt or something along those lines inside the suit, since it's almost always spandex looking and not tacticool/NBA type shit.
You can tell even Tobey and Andrew (and/or their stunt doubles) also wore a belt or similar.
With Tom, they switched it out for boxer when they did the costume undress that Aunt May caught him in since they couldn't shoot the scene with a dancer's belt
if they ever shoot anything else like that, it will likely also be boxers for the same reason