Wow, Jim, you just brought back a long-buried memory. As a child
I had an Oscar the Grouch book with a picture of a grumpy man's
face; when inverted, the eyebrows and furrowed brow became a
mustache and downward-curled mouth, and vice versa. Oscar implored:
"Turn a frown upside down -- and keep on frowning!" When your world
is filled with pre-school teachers and day camp counselors
imploring you to sing "If You're Happy and You Know It," that's a
delightfully subversive message. No wonder it made an
impression.