
were identical by COINCIDENCE,
The Big Bang Theory Season 5, Episode 14

It's probably just a COINCIDENCE.
The Big Bang Theory Season 9, Episode 24

...people unfamiliar with the law
of large numbers would call a COINCIDENCE.
The Big Bang Theory Season 1, Episode 4

Do you think it's a COINCIDENCE
Game of Thrones Season 4, Episode 4

It's an amazing COINCIDENCE.
Can we leave it at that?
The Big Bang Theory Season 3, Episode 3