How I Met Your Mother2005

Lily Aldrin:
So tell me, what's the difference between peanut butter and jam?

Narrator:
And then Barney told the punchline. To this day, it's the dirtiest joke I've ever heard. And no, I'm not going to say it.

Lily Aldrin:
I can't be around you anymore. [Leaves]

Barney Stinson:
Aw, come on!

Ted Mosby:
Told ya.

Barney Stinson:
She'll be back.

Narrator:
And we didn't see Lily again for four weeks.