...Superman cleans his uniform
by flying into Earth's yellow sun...
The Big Bang Theory Season 2, Episode 11
Unless Superman
matches her speed and decelerates.
The Big Bang Theory Season 1, Episode 2
Like Superman and Clark Kent.
Money Heist Season 1, Episode 12
Superman works up a sweat, comes back
to Earth, his uniform now stained...
The Big Bang Theory Season 2, Episode 11
is out flying,
Superman has to fly after him
The Big Bang Theory Season 12, Episode 2