Projectile vomiting pepto bismol, making it seem like one is yelling with pepto bismol coming out of their mouth. Symptoms include pink vomit that travels long distances, and a throat that does not burn afterwards due to the pepto. This expression is cousin to technicolor yawn.
Mom: He was so sick last night he puked up the pepto bismol I gave him and it was EVERYWHERE.
Mom 2: The pepto yell, eh? My daughter had that a week ago.