When we sing at the Kid's Chantey at Hyde St. Pier, we really have to change ANY questionable words, including even the mildest 4-letter ones. I don't find it to be a problem--after all, a good chanteyman made up words to suit his audience anyway.

I think I only know the raunchy version of "Johnny Come Down to Hilo"--I've only heard Elise sing it. I myself do not actually know any dirty songs--I feel so left out, but it just ain't "me".