Locked himself in his room
and built a sonic death RAY.
The Big Bang Theory Season 1, Episode 4
...teenagers running around
with RAY guns, right?
Breaking Bad Season 3, Episode 11
Ray Liotta's signing
autographs until 2:00.
The Big Bang Theory Season 12, Episode 17
♪ A cathode RAY tube
without an electron gun ♪
The Big Bang Theory Season 7, Episode 6