From Lifehacker and elsewhere, some videos explaining you how to do stuff.
How to fold a T-shirt (explanations in Japanese, but you don't need to know the language)
If, like me, you are utterly incapable of following the instructions, here's a complete detailed step by step explanations in English. If after that, you still can't do it, you're hopeless and beyond help.:
How To Open A Beer Bottle With A Piece Of Paper:
How To Unlock A Car Door With A Tennis Ball: