Love your doo doo

What you say when your hanging up the phone with your friends or family. You try to say it before they do and hang up before they have the chance to say it back to you.

You: I'll call you back later.
Friend/Family Member: Ok
You: Love your doo doo
Friend/Family Member: NOOOO
You: Hangs up before they get the full "NOOOO" out.