The bikini-clad teenage girls lie on mats on the sand and massage each other with low-protection sun-tan oil while examining the advancement of their tans with pocket mirrors.
"What do you think they do about their white bits?" I ask Yo. "Maybe they go to tanning salons where they can lie naked in private booths," he says.
"Yeah, but then you'd have to block all the other parts apart from the white bits or tanned parts would get even darker and you'd still end up with uneven patches. I think they probably use fake-tan oils."