I don't think the sort of lunacy which Numpo refers to exists in many units nowadays if feedback I'm getting is right. We used to have loony days at Heathrow... one bloke wired up his old RAF bonedome and sat controlling the planes wearing it, but he was smartly dressed below! There's a lot of difference between being screwy and scruffy!
Wonder what PH-UKU does on Tuesdays?