But that's why birds do it, bees do it   Even educated fleas do it   Let's do it, let's fall in love      In Spain the best upper sets do it   Lithuanians and let's do it   Let's do it, let's fall in love      The Dutch in old Amsterdam do it   Not to mention the Finns   Folks in Siam do it   Think of Siamese twins      Some Argentines without means do it   People say in Boston even beans do it   Let's do it, let's fall in love      Romantic sponges they say do it   Oysters down in oyster bay do it   Let's do it, let's fall in love      Cold Cape Cod clams 'gainst their wish do it   Even lazy jellyfish do it   Let's do it, let's fall in love      Electric eels, I might add do it   Though it shocks 'em I know   Why ask if shad do it   Waiter bring me shad roe      In shallow shoals, English soles do it   Goldfish in the privacy of bowls do it   Let's do it, let's fall in love      The dragonflies in the reeds do it   Sentimental centipedes do it   Let's do it, let's fall in love      Mosquitoes, heaven forbid, do it   So does every katydid do it   Let's do it, let's fall in love      The most refined ladybugs do it   When a gentleman calls   Moths in your rugs do it   What's the use of mothballs?      Locusts in trees do it, bees do it   Even over educated fleas do it   Let's do it, let's fall in love      Let's do it, let's fall in love   Let's do it, let's fall in love