Crossword puzzle clue "lost according to this theme"

Lost, according to this theme

Gets lost, according to the saying?

Official start of the Christmas season, according to protesters ... or, homophonically, an explanation of this puzzle's theme

According to the '60s sitcom's theme song: "It's primitive as can be ... here on ___": 2 wds.

This puzzle's theme—according to Twain, it's "a good walk spoiled"

"... this uncharted desert ___" (where Gilligan was, according to the theme song)

Most like the Addams Family, according to the theme song

Where the Lost Battalion got lost