A "pinky swear" is a gesture often used by children to signify a promise or agreement. It involves two people linking their pinky fingers together while making a commitment to keep their word. This act is often seen as a playful and innocent way to establish trust between friends. The origins of the pinky swear can be traced back to various cultures, where similar gestures symbolize loyalty and sincerity. In some traditions, breaking a pinky swear may be considered a serious offense, emphasizing the importance of keeping promises made in this manner.