I like the variation where the note for "hair" is played a half step flat. In the example on the wikipedia page, the implied chords for "shave and a hair- cut"

I like the variation where the note for "hair" is played a half step flat. In the example on the wikipedia page, the implied chords for "shave and a hair- cut" would be (original) G / . C G shave and a hair cut (variation) G / . Eb7 D7 shave and a hair cut