Belgian bullet 

Sexual special-move performed by a male. Involves pre-jacking, unbeknownst to the receiver- preferably in another room. The aim is to ejaculate on the receiver or their belongings before they know what's happening. Proper execution requires even amounts of skill, patience, concentration and stealth.

Subject A is reading a book outside.
Subject B notices from inside and commences pre-jacking.
Once Subject B is about to ejaculate, he quickly and quietly moves toward Subject A and unleashes the Belgian bullet.
Subject A never gets to find out what happened on page 156, and upon returning to the library is forced to pay a fine.
Subject B, victorious, begins the search for a new partner.

Belgian bullet by bestnarcolepsyever March 15, 2009