Never Smile at a Crocodile

Never smile at a crocodile
 No, you can't get friendly with a crocodile
 Don't be taken in by his welcome grin
 He's imagining how well you'd fit within his skin
 Never smile at a crocodile
 Never tip your hat and stop to talk a while
 Never run, walk away, say goodnight, not goodday
 Clear the aisle but never smile at Mister Crocodile
 You may very well be well bred
 Lots of etiquette in your head
 But there's always some special case, time or place
 To forget etiquette
 For example
 One positively must not wear a pleased expression on his countenance
 When confronted with that large lizard-like amphibious reptile
 Who has long jaws, armored skin and webbed feet and who is known as the crocodile
 It has been discovered that one simply cannot cherish an amicable
 Or trustworthy relationship with the a for mentioned species
 In addition, it is mandatory that one does not become irresistible drawn into
 The erroneous belief that the lateral open extension of his lips means that you're entirely welcome
 It is much more reasonable to assume that he is contemplating how you would look in a lizard suit
 His, hehe
 Clear the aisle but never smile at Mister Crocodile