Jack-o-lantern, Jack-o-lantern, you're as happy as can be. (hands form circles for eyes.)
With two big eyes and one big nose. (Hands form triangle.)
A smile as big as this, you see. (Fingers spread smile across the face.)
I'm a Jack-o-lantern
I'm a jack-o-lantern with a candle in.
Biggest smile of welcome you have ever seen!