How I Met Your Mother, Season 9

The Mother:
Hey, are you okay? You look stressed. Plus, you muttered a few words out loud. I heard "lonely" and "unicorn", which actually gave me a great idea for a children's book, so... thank you. Are you okay?

Lily:
No, but there's nothing you can do.

The Mother:
Do you wanna cookie? [Offers a container of cookies]

Lily:
Yes... yes I do! [Grabs a cookie]

The Mother:
Whoa! You just took a cookie from a complete stranger on a train. I like how trusting you are. There could be drugs or poison in there.

Lily:
But there's not, is there?

The Mother:
No idea, I found them under my seat.

[Lily spits out cookie]

The Mother:
No! Kidding! Sorry! You looked stressed so I thought you could use a cookie and then I thought you could use a joke, I should have stopped at the cookie.

Lily:
You know what? I don't care if these are poisoned. There's chocolate and peanut butter and caramel in these sumbitches.

The Mother:
I call them sumbitches! [smiles and laughs along with Lily]

Future Ted:
...And that's how Lily met your mother.