If you feel boring at a party and want to raise everybody's spirits, show them how skillfully you can hold basin with water just under the ceiling.
Fill a big basin with water, take a mop, ask someone to rise the basin to the ceiling and prop it up with the mop! Then ask somebody to hold the mop in such position, while you will bring another thing to show a trick. The victim agrees, not suspecting that he subjects himself to "torture". Coz now, when he is holding the mop, he is unable to let it down because the water would flow on him. At the same time, you don't hurry to show the trick, coz you don't know any trick, except this one!