"London," insisted Arthur, "Islington."
"Oh," said Zaphod with a guilty start, "that party."
This wasn't fair on Ford at all. He looked backwards and forwards between Arthur and Zaphod. "What?" he said to Zaphod. "You don't mean to say you've been on that miserable planet as well do you?"
"No, of course not," said Zaphod breezily. "Well, I may have just dropped in briefly, you know, on my way somewhere ..."
"But I was stuck there for fifteen years!"
"Well I didn't know that did I?"
"But what were you doing there?"
"Looking about, you know."
"He gatecrashed a party," persisted Arthur, trembling with anger, "a fancy dress party ..."
"It would have to be, wouldn't it?" said Ford.