Face sitting
Face-sitting (also called queening or kinging) is sitting on a partner's face so they can perform oral sex from below — the receiver lowers their vulva or anus onto the giver's mouth. It naturally blends oral pleasure with a dominant, on-top dynamic: the person seated controls the angle, pressure, and pace. Pushed further it becomes 'smothering,' where the giver's breathing depends on how much the sitter lifts up. It ranges from comfy mutual pleasure to intense breath-restricting domination. It's a favourite in both vanilla and FemDom play.
For the one on top, it's control, coverage, and directing their own pleasure — a naturally dominant, powerful position. For the one beneath, there's the eroticism of being 'used,' the intimacy of total closeness, and the submissive thrill of surrender (and, if smothering, controlled breathlessness).
The receiver kneels or squats over the giver's face and lowers down, grinding and adjusting to guide the oral stimulation, while the giver uses mouth and tongue and holds or caresses their hips. In a smothering version, the sitter deliberately controls how much air the bottom gets.
The one on top must let the bottom breathe — lift up regularly and agree a clear signal (a tap or squeeze, since they can't speak). Support your own weight rather than dropping it fully, keep any smothering brief, and never take the breath-restricting version to real oxygen loss. Basic hygiene and barriers apply as with any oral sex.