Under…denims? That’s the new underwear push from Diesel, who’ve put together a new range of “Underdenim” trunks for men who like to wear their slacks low with a bit of cheek on show, otherwise known as the “Most Dumbest Fashion Fad Eva”. Misleading marketing be-damned, they’re made of cotton rather than denim (which we’re certain your knackers will be thankful …