It's Purple Cold, Wear the Fat Jacket

Mom: Shoes and socks on, it's about time to go.
Z: Don't say it like that, "shoes and socks."
Mom: Why not?
Z: Say "socks and shoes." How can I put socks on after I put on the shoes?
Mom: Very well. Now, go put on your socks and shoes.
Z: And my fat jacket.
Mom: Fat Jacket??
Z: Because it is really cold this morning.
Mom: Yes it is. It is very very cold. Put on your 'fat jacket,' for sure.
Z: Because it is cold. And I want to go outside and play at recess.
Z: How cold is it?
Mom: Very cold. It's about freezing.
Z: It that purple cold?
Dad: Purple cold??
Z: Yeah. Is freezing purple cold?
Dad, Mom: ???
Z: Is it purple or blue or green cold?
Mom: Oh, like on the tv, on the weather map(!)
Dad: Yes, it is purple cold.