"like Mr Kipling’s Bi-coloured Python-Rock-Snake"
The Elephant's Child
Public DomainThe Elephant's Child

The Bi-Coloured-Python-Rock-Snake is a character in 'The Elephant's Child', one of the Just So Stories by Rudyard Kipling. One of the snake's characteristics is his tendency to speak in a rather ponderous, highfalutin, way (just like Mr. Mybug):

'My young friend, if you do not now, immediately and instantly, pull as hard as ever you can, it is my opinion that your acquaintance in the large-pattern leather ulster' (and by this he meant the Crocodile) 'will jerk you into yonder limpid stream before you can say Jack Robinson' - the Bi-Coloured-Python-Rock-Snake