flip
v.— «It’s hard for me to feel sorry for guys that are driving three Mercedes and living in million-dollar homes and worrying about six or seven pounds because they have to ‘flip,’” Lukas said. (Flipping is racetrack parlance for self-induced vomiting).» —“Weigh in on riders” by Sherry Ross New York Daily News Apr. 28, 2004. (source: Double-Tongued Dictionary)