Ya gotta love highly-posed photos that are intended to look organic.
I can almost hear the photographer giving them instructions (in a British accent, of course) -
"Okay, here's your motivation: look relaxed, but really intense...great, now look concerned, but the kind of concerned where you don't really give a shit...perfect! Okay, now pretend you are best friends who hate is each other...Perfect! Okay people, that's a wrap!"