
It's straight, it's in a LOOP,
The Big Bang Theory Season 11, Episode 13

Not till you tell me about
your latest paper on quantum LOOP theory.
The Big Bang Theory Season 10, Episode 24

A LOOP counter and an escape
to the least objectionable activity.
The Big Bang Theory Season 2, Episode 13

...who believes LOOP quantum gravity
better unites quantum mechanics...
The Big Bang Theory Season 2, Episode 2

You're doing work
in quantum LOOP corrections.
The Big Bang Theory Season 1, Episode 12