Witty, wonderful, and slyly fun, the song ""I'm in Love with a Big Blue Frog"" was a huge hit for Peter, Paul and Mary in 1967, and has been a favorite in classrooms, camps, and at sing-alongs ever since. Not only do children delight in the playful tune, but adults also embrace its lyrics, which gently send a message of tolerance in the most light-hearted, humorous way.