Complex sentence: Pieing has its origins in the "pie in the face" gag from slapstick comedy, first seen in the 1909 Essanay Studios silent film "Mr. Flip" starring Ben Turpin.
Split into simpler sentences: Pieing has its origins in the "pie in the face" gag from slapstick comedy. It was first seen film in the 1909 Essanay Studios silent film "Mr. Flip" starring Ben Turpin.