Christmas is coming. The goose is getting fat. Please put a penny in the old man's hat.
If you haven't got a penny, then a ha' penny will do. If you haven't got a ha' penny, then God bless you!
Lyrics taken from http://www.lyricsmode.com/lyrics/k/kingston_trio/a_round_about_christmas_please_put_a_penny_in_the_old_mans_hat.html