It’s in the quotes…
James May: [talking about dot matrix congestion signs] There’s never any correlation between a dot matrix display and the truth, in fact I’ve got a mate with a microwave oven with a dot matrix on ’em, and when you cook something in it, it goes “ping” and then it says: “enjoy your meal”.
Jeremy Clarkson: Which is extremely unlikely if itâ€™s come out of a microwave.
James May: Particularly unlikely when I was drying my pants in there.
I’ll leave you to worry about why I was googling for james may microwave pants.