Structure, constant structure.
One ATOM.
The Big Bang Theory Season 3, Episode 14
A hydrogen ATOM, H,
plus pigs minus P, "higs."
The Big Bang Theory Season 3, Episode 13
Atom of hydrogen,
Adam of Maroon 5, mic drop.
The Big Bang Theory Season 9, Episode 23
links together every ATOM
in the universe.
Hmm.
The Big Bang Theory Season 12, Episode 21
♪ I'd be an ATOM
without a bomb ♪
The Big Bang Theory Season 7, Episode 6