Made Up Words

Pete was talking to an airline representative on the phone today. In giving his confirmation number, he started doing the a for apple thing. All of a sudden, I heard this:

"D as in Dog, F as in Frank, Z as in Zed"

I'm sure the representative wondered why their was a crazy person laughing in the background.

Addendum:

I googled "zed" and found that, according to Wikipedia at least, it is a real word that is actually the name of the letter zee, as it is called in non US English speaking countries.