When searching, remember, a few words are better than many
ID166-“Wait,” “Hold up,” “Give Me a Moment”
Question: Can a player pick a tile from the wall if another player says, “wait,” indicating they are thinking about taking the most recent discard for exposure?
Answer: Once a player has said, “wait,” or any other word or words indicating they may want a discard, the game stops until the player decides if they actually want the tile.
Source: Mah Jongg Made Easy edition 2020, pg. 14, THE PLAY
See ID 86 & ID89, Simultaneous call for exposure and for Mah Jongg