I like Kendall's version too, but mine went;
If the moonshine don't kill me,
I'll live till I die.
Slag seems to be a bit of a metaphysicist, but not all good things happen after dark - like sunrise, sunset, eclipses, streakers at cricket matches and afternoon drinking. But, chacun a son gout - unless it's real gout and your big toes are buggered.
Davy.