Bull

A bull is a man who engages in sexual activity with a woman in the presence or with the knowledge of her partner, typically as part of a hotwife or cuckold dynamic. While the bull is an outside participant, their role is central to the couple's shared fantasy, focusing on providing sexual satisfaction to the woman while the partner derives pleasure from observing or facilitating the encounter.

This role is distinct from other forms of non-monogamy because it is specifically structured around the couple’s dynamic. The bull is often expected to be assertive and focused on the woman's pleasure, serving as the catalyst for the couple's arousal within a framework of clear boundaries and mutual consent.