Masturbate - From the Latin, masturbārī, meaning "to jack one's meat". Masterbate - DOESN'T FUCKING MEAN ANYTHING... C'mon people, Let's get it together. If you have enough finger dexterity to play with yourself and use a keyboard, (especially at the same time,) I'd think it's fair to expect you have enough mental capacity to spell this commonly used word correctly. There are enough idiotic misspellings on the interweb... PLEASE stop adding to them.