To twist somebodies nipple using your fingers with force.

Or applying any device than can pinch a human's nipples that spins.

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy

When someone pinches your nipple and painfully twists them untill they bleed or bruse.

The name of a vampire truck stop in all of the Dusk To Dawn movies.

To grabs ones titty and twist until it turns black and blue.

Also, see purple nurple.

The pinching and twisting of the nipple or approximate area on the chest. In extreme cases black and blue bruses may develope thus deriving its secoundary name the Purple Nurple

When someone squeezes the nipples hard and twist them at the same time. This is commonly done using the index finger and thumb. This can be painful of pleasureful depending on the freakiness of one.
Can be a crude way of punishment.