TV series example of the word

The Big Bang Theory Season 1, Episode 4
- What happened to your egg research? - Oh, that was a dead end.

The Big Bang Theory Season 1, Episode 13
His mother was human. His father was Vulcan. They couldn't conceive.

Vikings Season 1, Episode 6
And he was right about the western lands.

The Big Bang Theory Season 9, Episode 21
That was scary.

The Big Bang Theory Season 12, Episode 10
It was good, it just would've meant more coming from me.