PRANKS TO PLAY ON YOUR FRIENDS
Choose your victims with care.
Make sure that it is someone who will see the funny side of the joke afterwards.
Never play practical jokes on anyone that you think might become upset by it. Upsetting anybody is not a joke, it is just being nasty.
Never try a practical joke that could hurt someone.
Don't play practical jokes on grow ups unless you're sure they'll find them funny.
Remember your victim might see this web site and play a joke on you and then you'll have to see the funny side of it.
Lastly, it's always a good idea to wear running shoes when playing a practical joke. That way you can make a quick getaway.