"Oh frettled gruntbuggly ..." he began. Spasms wracked Ford's body — this was worse than ever he'd been prepared for.
"... thy micturations are to me | As plurdled gabbleblotchits on a lurgid bee."
"Aaaaaaarggggghhhhhh!" went Ford Prefect, wrenching his head back as lumps of pain thumped through it. He could dimly see beside him Arthur lolling and rolling in his seat. He clenched his teeth.
"Groop I implore thee," continued the merciless Vogon, "my foonting turlingdromes."
His voice was rising to a horrible pitch of impassioned stridency. "And hooptiously drangle me with crinkly bindlewurdles,| Or I will rend thee in the gobberwarts with my blurglecruncheon, see if I don't!"
"Nnnnnnnnnnyyyyyyyuuuuuuurrrrrrrggggggghhhhh!" cried Ford Prefect and threw one final spasm as the electronic enhancement of the last line caught him full blast across the temples. He went limp.
Arthur lolled.
"Now Earthlings ..." whirred the Vogon (he didn't know that Ford Prefect was in fact from a small planet in the vicinity of Betelgeuse, and wouldn't have cared if he had) "I present you with a simple choice! Either die in the vacuum of space, or ..." he paused for melodramatic effect, "tell me how good you thought my poem was!"
He threw himself backwards into a huge leathery bat-shaped seat and watched them. He did the smile again.