Question about a phrase Adam used

In "I'll Be Waving As You Drive Away (Part 2)" Mary attents the school for blind.
I only know the dubbed german version of this episode and I was a little bit confused when in the scene where Adam is going to teach Mary how to eat correctly, he says something like: "Soup is ready" But there is no soup served in that scene.
Well, first I thought it was a blooper in the translation and they made "Suppe" (=soup) from the word "supper", what sounds very much alike in German. But another person, who owns the original DVDs, told me that Adam says "Soup's on" indeed.

I never heard this before and can't find this phrase in my dictionary. Is this a common phrase in the USA for "Dinner is ready" or is it a local idiom? :think:

It would be nice if anybody could tell me something about that.

Yes, "Soup's on" is a common phrase for "dinner's ready" :)

My mom used to say it all the time...she'd yell out the back door "Soup's on!" and we'd be having Salisbury Steak lol

Yeah. I don't think it's a good way to announce the meal ... it can be deceiving when you're actually craving soup and get something else :unsure: lol

Hi.

Although we've never used the phrase, I've heard it many times as it's very common in the US.

And yes, it can be confusing to some people, I guess, if they don't know what the phrase means.

BTW - I'm pretty sure you won't find it in a dictionary. If you search online for the phrase, you might come up with something. See what these people have to say - http://forum.wordreference.com/showthread.php?t=23641

Thank you all.
So with your help again I learned something new by watching LHOTP.