The Waterfall
M/F · Vaginal penetration · Kneeling
Posed figure
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Keypoint template
Attributes
- Position family
- One-on-one
- Primary act
- Vaginal penetration
- Partner arrangement
- Kneeling
- Penetration type
- Vaginal
- Facing
- Face to face
- Dynamics
- Thrusting
- Support / surface
- Edge of surface
- Participant count
- Two
- Composition code
- M/F
- Source medium
- Video
- Physical difficulty
- Moderate
- Prevalence in adult media
- Occasional
- Intensity tier (compliance)
- Explicit
Common camera framing
Description: The receiving partner lies back with the head and shoulders hanging over the edge of the bed while the penetrating partner kneels at the edge. The inversion of the head is the point: it changes blood pressure in the head and the sensation, and it is why the position has a name at all.
Variations: Head hanging free or supported by the partner's hand, shoulders on or off the edge, and the legs raised or wrapped.
On camera: The hanging head and hair give the frame a strong vertical, which is most of why productions use it. Best low and in profile, and always in short takes.
AI design considerations: A supine figure whose head and shoulders extend past a surface edge with the neck extended backward. Get the edge in frame, since without it the inversion has no explanation.
Generating this position
A starting prompt composed from the catalog vocabulary. Every tag is verified to exist and not be deprecated. Compose across wardrobe, scene and expression in the prompt builder.
Booru-tag checkpoints
1boy, 1girl, hetero, missionary, on_back, head_back, kneeling, spread_legs, bedside, on_bed
negative: bad_anatomy, bad_hands, censored, monochrome, 2girls, 3girls, 2boys, 3boys
Image to video (Thrust (deep))
long-range reciprocating motion along the body axis, full amplitude, torso following the hips, camera is locked on a tripod and does not move.
Motion only. The still you condition on must already carry the position, wardrobe and scene: restating them causes drift.
Identifiers in other vocabularies
How this position is denoted elsewhere, and what each mapping discards. Full table in the crosswalk.
missionary fixes only that the receiver lies on their back facing the partner, with any leg arrangement. It discards the head and shoulders hanging over the edge of the bed with the neck extended backward, the inversion that is the whole point of this entry. No live tag names a head hanging past a bed edge, so bedside restores only the edge and head_back only the tilt of the head.
Actions this position admits
The position fixes who is where. These are the beats that are physically possible in it, from the action catalog. Contact through the characteristic beat is intermittent.
Camera moves that suit the geometry: Crane down, Arc (partial), Push in, Locked off.
Related positions
Part of the Erotic Pose Catalog open dataset · CC BY 4.0 · keypoints are idealised COCO-17 templates.