Passing Jokers During the Charleston (Article ID 133)
Abstract: Jokers can never be passed during the Charleston. If a player received a joker during the Charleston they must give it back to the players who passed it to them.
Question from a player: Can I pass a joker in the Charleston?
Answer from the NMJL: “A joker may never be passed.”
Source: Mah Jongg Made Easy 2020 page 14, bullet 4 (Other Tips)
Other answers from the NMJL:
“A joker may not be passed in the Charleston for any reason whatsoever.”
“…and you may not pass a joker in the Charleston.”
Sources for other answers: National Mah Jongg League Q&A (1973, 1974) http://www.nationalmahjonggleague.org