Whether you're trying to get the attention of your butler or just jamming along to your favorite song, there's nothing like knowing how to give a sharp, loud snap of your fingers. Snapping comes easier for some people than for others, but with a little practice, almost everyone can do it. Start trying today and you should have it soon — with any luck, it'll be a snap!

Cracking your knuckles can accomplish so many things: release tension in your fingers, keep your hands busy, totally annoy those around you and possibly even freak them out - all valid reasons. Just how do you do it, though? Let us count the ways.

Amaze your friends at the next party or gathering you go to by putting a finger lock on an unsuspecting person. Learn how to perform this simple party trick, which seems to “lock” another person’s ring fingers when that person believes he or she should be able to move them. Try a method with one or two hands, and use modifications if you find that someone is able to get out of the lock.

Have you seen Sonic and the rest of the Knothole Freedom Fighters give their secret handshake, and wondered out you could do it with your friends? Then you have come to the right place.

This imaginary string pulling trick is a great one for kids to play on their friends. The key to making this trick work is to convince your friend that it will work. Set up the trick by having them clench their fist and rubbing their fingers. Then, pretend to pull a string out of the palm of their hand. If you’re lucky, your friend will really feel like you are pulling out a string.

Taking fingerprints for crime investigations requires precise techniques. A smudge or bare patch can make computer analysis worthless, or cover the minutiae used to match suspects. If you have questions about a specific, unusual situation, try to find the guidelines for your specific agency or the agency you'll be sending the prints to. If you're taking fingerprints for fun, use a

Do you want to make a person laugh and squirm a lot? The penalty tickle is one of the funnest ways to "pay someone back" for something or to just make them howl with laughter. Be warned though - you could be next!