Wow, that's an interesting one for analysis, FRiend.
As you all know, but as I was telling my ex-husband just yesterday (he'd had a weird dream where he was working at previous jobs), things that happen in dreams often don't represent those actual things in real life. Making your way through a many-roomed house might be exploring about your mind, etc. Or like my Pearl Jam and writing class examples earlier, they're more about creative writing vs. journalism, not really not so much the band or my writing class. I'm sure you've all talked about this, as I'm a relative newcomer to this thread, so this is probably elementary for you guys.
But with that in mind, what does the TV represent? What is the mouth? Even your in-laws -- could they represent something other than your actual in-laws?
Just a wild guess, but could this be something about the tension between wanting to separate yourself from current events and/or popular culture (the TV) vs. the difficulty of escaping it (being sucked in, the huge mouth)?
You're the best judge, of course. What do you think?