Typewriter is the reason behind the least effective keyboard layout ever devised becoming a standard. Also known as QWERTY it is the primary source of fingerjams on a computer keyboard.
A sexual position synonymous with the girl on top cowboy position. She has her hands down on the chest or stomach similar to how one would use a typewriter.
When your having sex with someone from behind you start from one end of the bed and eventually make it to the other side, having to start over from the beginning like a typewriter.
A gang bang where the girl is passed down a row of guys, whereupon reachingthe end of the line she starts over at the beginning. Similar to a typewriter