
So, I'm like a lab RAT
before your real friends come over?
The Big Bang Theory Season 10, Episode 6

a snitch, a filthy RAT.
Money Heist Season 1, Episode 6

What, you think
I'd partner with a RAT?
Breaking Bad Season 5, Episode 16

Did you know that there's
an acceptable level of RAT turds...
Breaking Bad Season 3, Episode 10

I smell a RAT.
The Big Bang Theory Season 12, Episode 7