The stench of Lynx. The smell that strips paint off walls and causes everyone's eyes to water. It's only ever been found to have one use, and that's letting you know that a teenage boy is on his way.
Clearly though, it's a market Lord Sugar wants to get in on, because this week he wanted his teenage oiks to create and brand a new deodorant. And to then make a TV ad for it. To tell them this, he inexplicably appeared on a giant screen at Wembley Stadium, which seems a bit ostentatious to us (small penis).
But then we were distracted by Lizzie?s incredible naked trousers, so maybe we simultaneously missed the point and became horrific would-be child-molesters.