A deviant act that has most of the events of an eskimo trebuchet, but with a few shit twists. A windmill spread is where the man puts his dick between his legs and is being sucked off from behind, but then sharts all over the face of the blow-jobber. He then rubs his Peter all over their shart-ridden face, coating his cock in the slippery shit, before finally spreading flecks of squit into the air by willy-windmilling for the blow-jobber to catch in their gob.

The phenomenon of having to come out as bisexual to the same person/people repeatedly because they assumed or hoped that your sexuality was a "phase." Refers less to the holiday and more to the 1993 Bill Murray comedy film in which the main character experiences the same day over and over.