Foster's Home for Imaginary Friends, Season 1

Frankie:
[squats down to Mac's height] Mac, Bloo, Foster's is a "foster" home. It's not a boarding house. If you leave Bloo here, you can't come see him, because he won't be yours anymore.

Mac:
What?

Frankie:
He will be put up for adoption, like everybody else here.

Bloo:
[horrified shock] ADOPTION?!

Wilt:
Yeah. For one reason or another, we've all been given up by our creators, and as much as we all love living here, what we really want is to be adopted by a new kid who needs an imaginary friend.

Bloo:
Well then, forget it. As cool as this place is, adoption's not an option. Come on, Mac, let's go.

Mac:
Wait.

Bloo:
What?! Come on, Mac, adoption?

Mac I know, but what else can I do? Mom said.

Bloo:
But--

Mac:
But don't worry, I'm not giving you up. Just stay here until I can think of a better idea. If I come back tomorrow--

Frankie:
He's still yours, but if a kid shows up and wants him, and you're not here, he will be adopted.

Mac:
[makes up his mind] Okay.

Bloo:
"Okay?" "OKAY?!"

Mac:
Don't worry, I will be here. [Bloo holds his arms out for a hug] A hug? I umm...I got these uhh, Sorry. [leaves] I'll be back. I promise!

Mr. Herriman:
"I'll be back." Hmpf! If I had a carrot for each time I'd heard that, I'd be such a very fat rabbit!But don't worry, Master Bloo, you look like a fine imaginary friend and will most certainly be snatched up by a new child in no time.