Things to do when you're out with a friend but have nothing to actually do.
Have a "Who is less competitive" competition. Trying to win at this will make you lose. Trying to lose makes you win which makes you lose. Not trying at all makes you lose which makes you win which makes you lose.
Try to not think about penguins. This is especially hard, because by trying too much, you remember what you were trying to avoid thinking of. If you try too little, you end up thinking about penguins anyway.
Watch TV, repeat everything said in Italian accent
If you're with a friend, play useless "Whose line is it anyway" games like my personal favourite, answering each other with only questions until one can't answer with a question.
Call McDonalds with weird complaints about their food.
Pinch yourself. What is pain? Why is it unpleasant? There's nothing physical about it - it's all in your mind. Plus, after pinching yourself for awhile, boredom will seem nice next to being in pain.