1Humorous. "on all fives": on hands, knees (or feet), and another part of the body (later especially the buttocks).

2Cards. A variation of all fours in which the winner of a trick scores the face value of any trump cards it contains, as well as an additional five points if the trick contains the five of trumps.

3Dominoes. A game in which points are scored only when the sum of the spots at the two ends is five or a multiple thereof.