we did a version of this at summer camp .. a counselor dressed in a white sheet/toga w/ leaf garland head dresses would read “Ode to a Grecian Urn” and campers, also dressed in white sheets/togas would walk around him holding urns we would drink from only to begin spitting water dyed colors on him as the poetic reading continued ... little did I know i was making art.
Why not go all the way and have colored projectile vomit as art?