Noun
(childish) The back.
(childish, often in the plural) The act of taking back or going back on a statement, promise, or agreement.
Synonym: takesies-backsies
(childish, often in the plural) A reciprocal action or consequence, such as immediately tagging the player who has tagged one in a game of tag.
(jacks, often in the plural) The act of going through a sequence of moves in reverse.
(childish, often in the plural) The act of joining a queue behind a friend rather than at the end of the queue.
Coordinate term: frontsie