A wiper is often used to describe the penis of a person who enjoys to wipe it across the faces of others.

When you eat dirt for the first time and leave your family to build a shack in the woods

Entry level position in the engine room of a Merchant Ship of the United States.

Duties include maintaining cleanliness of engine room machinery and gangways, bilge detail, and painting/chipping paint in the engineroom.

When you take a huge, pasty shit and your asshole is caked in your fecal matter resulting in the use of half of the toilet paper roll.

A girl with glasses gives head; the guy busts on each lens; the girl proceeds to wipe the semen off of her glasses in order to see by using her index finger to remove the vision imparing swimmers.

The person who is responsible for cleaning up the stars of an adult film. Normally this is the male dichotomy of a "fluffer"

In the sport of paintball, someone who "wipes" the paint off of them if they are hit, in order to stay in the game.