Tanguy Syndrome
n.— «France: Tanguy Syndrome The name comes from a 2001 film about a charming 28-year-old who refuses to move out of his parents’ apartment despite their comical efforts to get him out. The movie highlighted the trend and sparked debate.» —“Parlez-Vous Twixter?” by Deirdre Van Dyk Time (U.S.) Jan. 24, 2005. (source: Double-Tongued Dictionary)