Calling a discarded Joker

Someone discarded a Joker. Can anyone call it?

Question 1 of up to 1

When the Joker was thrown, did the discarder say “same” or the name of the previous discard instead of “Joker”?

Read every possible ruling for this situation

Joker dead

No — a discarded Joker is dead

Standard rule
No one can call it, for an exposure or for Mah Jongg. A discarded Joker is dead the moment it is down. It also cannot be picked up to use in a Joker exchange. It stays on the table, and play moves on to the next player.
Why
A Joker has no identity of its own, so there is nothing for a caller to match it to — and leaving it dead makes it the one perfectly safe discard.
Common house rules
Some groups ask that a Joker always be announced as “Joker” when thrown. The standard also allows “same” or the name of the previous discard, so settle the wording your table prefers.

If your table agreed on a house rule before the game, that rule wins.

Under review by instructors

Sources consulted: Mahj Life Rules Wiki, Article 259 (Naming Discards); Mahj Life Rules Wiki, Article 221 (Joker Protocols); Tom Sloper, Mah-Jongg FAQ 19 (American rules): “Can I claim a discarded joker?” and “Can I claim a redeemable tile?”; AMJA, The Complete American Mah Jongg Rulebook, FAQ: can a player call (claim) a discarded Joker tile

Same still dead

Still nothing to call

Standard rule
Still nothing to call. Naming a Joker “same” or by the previous tile’s name is allowed, and it does not change what it is: the Joker on the table is dead, and the earlier discard is now covered by it and out of play too. Keep your eyes on the tile, not only your ears on the name.
Why
Only the most recent discard is ever live, and a Joker can never be claimed under any name.
Common house rules
Some tables ask discarders to say “Joker” plainly to avoid confusion. That is a courtesy agreement, not a standard rule.

If your table agreed on a house rule before the game, that rule wins.

Under review by instructors

Sources consulted: Mahj Life Rules Wiki, Article 259 (Naming Discards); Mahj Life Rules Wiki, Article 107 (Window of Opportunity — a discard covered by a Joker); Tom Sloper, Mah-Jongg FAQ 19 (American rules): “Do I have to say same when discarding a joker?” and “Can I claim same tile when a joker is discarded?”; AMJA, The Complete American Mah Jongg Rulebook, FAQ: can a player call (claim) a discarded Joker tile

All rules