one thing i've been wondering about for quite a while now is, why are the buttons of alex's cuffs always undone? i kind of get why he and greg leave the uppermost buttons of their shirts open, but why the cuffs?

this is taken from series 3 (hence the lack of grey hair), because it shows here quite well, but you can take probably any other series and he'll have his cuffs unbuttoned. i want to know why? is there an explanation? theories? it's making me go insane. are there people who don't button their cuffs (other than alex i suppose) because i'm terrified of you. now they're just getting in the way and worse, if you wash your hands, you'll get wet sleeves.