1.5. Two men enter a bar. They both order identical
drinks. One lives; the other dies. (CR; partial JM wording)

1.5 answer: The drinks contain poisoned ice cubes; one man drinks
slowly, giving them time to melt, while the other drinks quickly and thus
doesn’t get much of the poison. The fact that they drink at different
speeds could be added to the statement, possibly along with red herrings
such as saying that one of the men is big and burly and the other short and
thin.