A Hot Dog and a Hallway

So it appears that Michelle Duggar is pregnant with her 18th child.  When I saw this story over the weekend I remarked to my wife that she must be the very definition of "tossing a hot dog down a hallway.  My wife immediately proceeded to laugh a lot harder than I would expected.  I looked at her and said "It wasn't THAT funny."  In between laughs she told me that she had never heard the phrase before.  That got me laughing.  I just couldn't imagine someone not knowing that metaphor.  It occurred to me then that there are many things I just take for granted as common knowledge that my wife really doesn't know anything about.  I suppose this is common in all relationships and is probably the cause of more misunderstandings than just about anything else.  I think this is even more true when two people come from vastly different parts of the country.  Even after 10 years of living together my wife and I don't share a common slang language.  Nothing too special about that, I just found it interesting and wonder what other sayings I have stored in my brain that might one day make her laugh.  Time will tell.