Smeardyakov the evil purple duck was sunning himself on the beach at the same Caribbean Island where Captain Obvious worked as a tourist guide. Smerdyakov wanted get a shade of purple darker because he was tired of people confusing him with his good twin, Dimitry.
Captain Obvious saw Smerdyakov and immediately confused him with Dimitry, his old friend. He walked up to the purple duck and said in his London accent: "Dimitry, old lad! How's it going? Never thought I'll see you around this part of the world, friend!" For answer, Smerdyakov kicked him on the left shin.
"Oi! What was that for?" Said Captain Obvious as he held his left shin and took little jumps on his right foot. Smerdyakov kicked him a second time, on the right shin. The Captain now began taking turns holding a shin while jumping on his other foot, cause both shins hurt like the blazes.
"Have you gone bonkers, duckie, old lad?" Said the Captain, still alternating jumps on either foot while holding the other.
When the silly tourists saw this, they thought Captain Obvious was teaching them some sort of native dance and they all began to imitate him singing: "LA CUCARACHA, LA CUCARACHA..."