From one of the best group of ads I can remember; the classic Highland Appliance spots from Detroit.
i remember the ads from when i was, oh, seven or eight years old (thirty years ago). i sprinkle "never eat spinach with a stranger" into conversation occaisionally and i'm unpreturbed that i'm the only one that gets the joke. cool as hell to actually see the ad spot again. i showed it to my wife to prove to her that i'm not totally insane (she, i'm sure, still thinks that i am).
I do that too! Throw "Never eat spinach with a stranger" out there once in a while. No one ever knows what I'm talking about. They'll laugh, because it's so random, but no one ever says "I remember that!!" Ahh well.
Found this post almost nine years later. I'm glad I'm not the only one who uses "Never eat spinach with a stranger" in conversation.