When a woman lays on her back, and someone defecates between her breasts, and proceed to squish them together. When you pull it apart, the feces will resemble wings, thus you have a peanut butter falcon.
Falcon. Noun. Origin: Skiing with Aaron. The best skiing move known to man, currently the fastest skiing style to hit skiing. During the act of the falcon one must go into the tuck position for optimum speed, while simultaneously spreading the arms giving your body "falcon like features" aka Wings. This position minimizes wind resistance which optimizes speed and agility.