Uh, did you notice your key CHAIN?
The Big Bang Theory Season 10, Episode 7
As we like to say,
"It's off the CHAIN mail."
The Big Bang Theory Season 10, Episode 17
I lost another to the Kingslayer,
strangled with a CHAIN.
Game of Thrones Season 2, Episode 8
...and the inability of some people
to follow the CHAIN of command.
The Big Bang Theory Season 1, Episode 6
I lost that key CHAIN years ago.
The Big Bang Theory Season 11, Episode 9