
♪ Sheldon and his BRAIN,
yeah! ♪
The Big Bang Theory Season 7, Episode 10

is getting a wedgie
from the rest of his BRAIN.
The Big Bang Theory Season 5, Episode 21

that can signal BRAIN damage.
The Big Bang Theory Season 10, Episode 16

that the BRAIN itself
is in two different quantum states,
The Big Bang Theory Season 10, Episode 20

♪ Sheldon
and his BRAIN... ♪
The Big Bang Theory Season 7, Episode 6