By the film's midway point, "Babylon" has already made grotesque celluloid art out of feces, urine, sweat, blood, and snake venom. All that's missing is vomit, which has its own storied history on the big screen. Unexpected upchucking is often used as an equally comedic and repulsive sight gag. This year's "Triangle of Sadness" gives "Babylon" a run for its money in the creative puking department, but Margot Robbie makes more of a show out of projectile barfing than any seasick heiress ever could.
In the scene in question, Manny and Elinor St. John (Jean Smart) have agreed to take a spiraling, out-of-control Nellie under their wings. They've taught her random words and phrases in French, and they've schooled her as to how to behave in the company of wealthy benefactors like the Rothschilds. Nellie, wearing more sleeve and skirt than is comfortable for her and with her hair in perfectly placed pin curls, arrives at a soiree and is told not to eat or speak too much and not to drink at all.
As she listens to the fur stole-wearing set mock her intelligence, she downs champagne and fancy finger foods until she can no longer restrain herself. She tells an off-color joke, eats the entire buffet by herself with her bare hands, tells off the guests, then makes a dramatic exit. However, she makes an even more dramatic re-entrance when her stomach gurgles. She rushes back in and promptly pukes all over an expensive rug. When the owner of the home confronts her, she spews straight into his face, then takes an elegant bow.