You can switch the internet off now – this site has won it, and will never, ever be bettered.
Some of my particular favourites:
272 – If the teacher forgets to assign homework, keep quiet.
245 - Look people in the eye when you thank them, especially waiters
165 – On a night out with the boys, never be the first to go home
45 – Drink rail liquor, a good drink rarely needs more than one ingredient. Usually Ice
Damn – I wish I’d thought of this – absolutely lovely.