I'd like to play a good prank on him, but not something that would hurt him physically or cost him (or me) money.
One plan that the people who work with me suggested would be to try to arrange with his boss to make him believe they have a reunion for 8:00AM on his birthday. Then in the night, shut off the electricity for a few seconds in his room to unset the clock. Change the time on all the visible clocks (like 30 minutes in advance). Take the keys in his pockets to change the time in his car, come back inside and wake him up at the time he usually wakes up and make him think he's late for his reunion.
I think this could be funny, it would not hurt anyone and his boss would already be aware that he might come in a few minutes late (anyway his work schedule is flexible in the first place...)
One plan that the people who work with me suggested would be to try to arrange with his boss to make him believe they have a reunion for 8:00AM on his birthday. Then in the night, shut off the electricity for a few seconds in his room to unset the clock. Change the time on all the visible clocks (like 30 minutes in advance). Take the keys in his pockets to change the time in his car, come back inside and wake him up at the time he usually wakes up and make him think he's late for his reunion.
I think this could be funny, it would not hurt anyone and his boss would already be aware that he might come in a few minutes late (anyway his work schedule is flexible in the first place...)
