As seen in this thread of the mistletoe meme, Ford and Zaphod had just absconded with the mistletoe itself and were headed off to find a convent to hang it in, certain that the plant released some sort of chemical that made humans kiss each other.

And, as a helpful prompt for Zaphod, here is Ford's last reply:

Of course Ford had to have one [egg ( Read more... )

You've reached Ford Prefect. I could be anywhere, really. No, really. Anywhere. Just leave a message.