A chemist goes to England for the first time

He walks into a crowded restaurant in the suburbs. He realizes he starts to get really hot, and as he wipes the sweat of his forehead he asks his waiter: “Why is it so humid in here?” The waiter responds “Lots of people have been moving from London recently, and everywhere is getting hotter from the body heat” It was at this moment that the chemist wished there were weaker London dispersion forces.