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