THE GREAT LEMMING MYSTERY SOLVED
Lemmings, very horny chaps,
waste no time in taking naps,
but burrow deep in snowy weather
making sure they rub together.
Sleep is not the lemmings' goal.
Lemmings know the male role,
humping vixens without rest
till seven litters fill the nest.
Seven litters, nine in each.
Three and thirty score to screech
and squeal and poke and sniff
that's when lemmings choose the cliff.