Any 'I Dream Of Jeannie' experts out there?

I used to watch this show when I was young and I particularly remember what has to be one of the funniest scenes I've *ever* seen on TV. It was in an episode of 'I Dream Of Jeannie' where Tony Nelson, Jeannie and Roger Healey are sitting around discussing something when Tony nonchalantly picks up a piece of fruit from among others in a large bowl in front of him and bites into it. He chews on it for a few seconds and then says, with a puzzled look on his face, "This is wax." Healey then says, rather smugly, "Yeah, they all are." I remember cracking up completely when I saw this for the first time! I can just imagine Healey thinking "You stupid idiot, biting into a piece of wax fruit! I always knew you were a klutz." The acting in this scene, Tony's deadpan delivery, the timing and the implied ridicule are so perfectly done that this one scene really deserves to be immortalized in some TV hall-of-fame somewhere. Can anyone tell me which episode this scene appeared in? Many thanks if you can.