Pass the Tabu is the second episode of Season 4 of The Brady Bunch, and the 74th overall episode of the series. Written by Tam Spiva and directed by Jack Arnold, it first aired 29 September 1972 on ABC.
After bad luck continues to befall the family, the Brady boys learn the ancient tiki is tabu and must be discarded at an ancient burial ground.
With the idol around his neck for good luck, Greg suffers a near tragic surfing crash. Bobby surmises that it could have been worse if Greg wasn't wearing the idol. A wall hanging in the boys' hotel room falls and almost hits Bobby, and a tarantula finds its way into their room and crawls on top of Peter. Bobby tries to get rid of the tiki, but it is returned to him by an unknowing Jan. Next, Jan, with the idol in her possession, unknowingly has a close encounter with a tarantula. It is then that David, seeing the idol for the first time, tells the boys that island superstition deems the idol to be a source of bad luck, news which the boys pass along to the rest of the family. Peter, who doesn't believe in the bad luck, takes the idol, and bad luck befalls him.
Although David doesn't believe in the superstition, he points the boys to old Mr. Hanalei, a construction worker who does believe in the superstition. He tells the boys that to rid themselves of the bad luck, they need to return the idol to the ancient burial site of the island kings, to which he himself has never been. The boys head off on their mission, telling only the girls of their plans and vowing them to secrecy. What the boys don't know is that an unknown sinister element is also at the burial site.