A Police Helicopter.
Often nocturnal creatures capable of perceiving visuals in pitch darkness. It is a well adapted specialised variant of the common pig, it beams down a search light so that the pack can hunt their prey. (Reminiscent of the tripods from H.G.Wells' "War of the Worlds")
"The day I get arrested is the day that pigs' can fly"
*the Flying pig shines its light over suspect*
"Oh fuck"
The act of sexual intercourse similar to "doggy style" when one individual is bent at the waste or on all fours (the catcher) and the other individual (the pitcher) is penetrating one of the catchers openings from behind. In order for the Flying Pig to take place the pitcher must reach over the top of the head of the catcher and pull upward on the nostrils as to give the catcher the appearance of a pig's snout, at which time the catcher will vigorously flail their arms in an attempt to thwart the nose grabbing only to make it appear as though they have begun to flap their wings; HENCE THE FLYING PIG.