In simplest terms, fisting is inserting a whole hand into the ass or pussy. Most people knows what finger fucking is, whether in pussy or ass, it's extremely pleasurable to stroke someone inside. And generally people are comfortable with the idea of finger fucking using more than one finger. But not as many people have been exposed to the idea of fisting. Yes, fisting is anatomically possible, and yes, very very pleasurable.
Fisting is one of the most complete and intimate ways to touch between humans, and it is has to be worked up gently and slowly. Fisting gives a fantastic feeling of connection and openness, the magical plane that two people fisting can attain, well, it's an incredibly intense way to make love.
Next you can find some tips to make the most of your fisting experience:
Keep AIDS away, use latex gloves.
An enema is a nice option, cause you will probably want to clean your bottom out. For an enema, warm water is best. Some people enjoy putting alcohol (booze, not rubbing alcohol!) in enemas; if you do, use a very diluted solution, for it to be absorbed very fast. Don't use detergent in enemas.
Remember to cut your nails until every finger is as smooth as it could be. You want to make sure you minimize all chance of causing damage. Your fingers will be in some very delicate places.
You can't have too much lube. Use lots of lube. Push it in with your fingers. Make a huge mess. Get it all over your hand, the back of your hand, between your fingers. Keep applying it as you go. Remember when you choose your lube, oil-based lubricants dissolve latex.
Do it slowly. Don’t rush, insert one finger and work up.. Be sensitive to your bottom's feelings. You are trying to persuade part of their body to open for you, to admit part of you deeply inside it. The energy will move back and forth, and you'll ride it, coaxing and pushing, in and out, moving your bottom into a trance. Communicate with your bottom; gags, or role-playing where the bottom feels inferior or is told to stay quiet, are not conducive to the kind of relaxation and open empathy you'll need.
You'll know when your bottom reach their limit, their orifice will suddenly clench tight shut. Don’t pull out. Wait there until the contraction ends, then start pulling out. You can pull a muscle or two if you try to back out in the middle of a reaction like that. it's OK if this happens so you’re gonna go slower next time.
When you reach five fingers, you're almost there. Now is when you want to be most sensitive and aware. Your bottom is going to be flying on pain and pleasure; a sudden flinch and you'll find the asshole (or whatever) doesn't want you anymore. Respect that, and pull out (slowly!). But if your bottom wants it, then you'll slip your knuckles inside, folding your thumb inside your fingers, and your hand will naturally form a fist.
So now you’re fisting, explore, entice, pleasure your bottom, who will be in heaven... and when it comes time to pull out, do so slowly and naturally!