A Grape Nehi is a type of beverage favored by Radar O'Riley. It contained no alchol and was served at Rosie's Bar. It was referred to many time, in season seven. When Radar was going to get a tatto. Hawkeye and B.J find a guy that has a tatto, and have him talk to Radar and try to get him off of getting one, when the man orders a grape nehi.