Ban Lynx.
Wearing your tie really, really short, or rolling your skirt up high.
This will only lead to your boss telling you off and the rest of the office mocking you for looking like a knob.
Deliberately causing potentially dangerous gas leaks.
It's not very cool to set a building on fire. Especially when you're 28.
Wearing your Umbro backpack (which you'd written on in Tipp-Ex) so low it was on your bum.
There's nothing cool about crippling back pain, guys.
Cutting holes in the sleeves of all your jumpers to put your thumbs through.
Definitely not OK as an adult.
