An expression involving klakluk was, "You'd swallow a klakluk and choke on a Menian dust fly". It meant that some people could handle big things, but stumbled over minutiae. The Doctor used the expression to Sarah Jane Smith, who was having trouble accepting that he could travel back to Atlantis. He couldn't understand why she was sceptical of his ability to travel back to Atlantis, since she already knew he could travel back to Irongron's castle in the Middle Ages. (AUDIO: The Paradise of Death)