Large amount of sperm/cum when one word is not enough so you say 'scum' instead.
-Do you like it when a guy cums on you?
-I like it more when he scums.
An Amphiptere (also called Amphithere, Amphitere, or Phipthere; meaning bi-winged, two-winged) is a type of winged serpent found in European heraldry.
Watch out for that large amphiptere!