Masculinization (sexual activity)

Masculinization or masculinisation, sometimes referred to as forced masculinization, is a practice within various dominance and submission or kink subcultures where a participant, often a woman, assumes a masculine role. This can involve cross-dressing, adopting male mannerisms, or engaging in activities typically associated with male gender roles, often as part of a consensual sexual or lifestyle practice.

Source: Wikipedia — Masculinization (sexual activity) (CC BY-SA 4.0)