One who removes an arm from a long sleeved shirt whilst grabbing the empty sleeve with his other hand and making a pumping motion with it. The removed arm remains underneath the shirt and is used to thrust through the hole created between the two sleeves.

Pumpers often travel in packs and exclusively listen to KRAT

Pumpers rarely pump it down low, they mostly try to pump it up.

The term ladies give to their man friends who do nothing but pump away. These types of men usually can't be bothered to engage in a bit of friendly foreplay. They are often related to the "pump 'n' dump" breed of man.

Replacement word for wanker or cunt

The try hard that uses a pump shotgun and drops tilted every damn time.

When a girl gives blowjobs but she is not a hoe, prostitute, porn star, or whore.

A man who is constantly pumping semen into women

pumpers better than tumblers because pumpers like to pump