give yourself a handjob by rubbing your hand up and down or inside (for women) your genitals.

To play with oneself, usually until orgasm is reached

Substitute pornography used by religious people, for instance the section of the Sunday newspaper advertising section that contains ads for bras and panties, or the Sports Illustrated swimsuit edition.

cheating on your girlfriend without cheating.

To have sexual intercourse alone. Males usually look at porn while doing this. Take 1 hand put it on the shaft of the penis. rub it up and down until it gets at its full potential. slowly increase your speed until you cant stop. it feels so good and no worries about pregnancy im pretty sure everyone does it sometime during every day.(i know i do)after beating it for a minute or a few you will reach the climax and ejaculate all over. the more you do it the farther you will shoot :D then your penis head becomes very sensative after you shot. Then you quickly turn off your porn, put your clothes back on and act like nothing happened. girls on the other hand take more time to do this. they mostly do it when they are away from people for a long enough time. You sit down usually on a comfortable chair or couch and then u stick your middle finger inside your vagina. Or you can take a few fingers and rub the clitoris (most sensative spot) some girls like to get ready for men in their life or just dont want to risk anything so they use a dildo(a plastic penis)Girls can either bend over and give anal masturbation which feels good or stick it the vagina slowly and deep. the girl will have an orgasm and if goes long enough will also jizz (lots more)girls after masturbation feel worn out and will most likely relax for a few minutes maybe rubbing boobs or clit very slowly.

something you do to feel like you are fucking yourself :)

to pleasure ones self