Fixing of a Nail
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
- Flat surface / bed
- Participant count
- Two
- Composition code
- M/F
- Source medium
- Illustrative
- Physical difficulty
- Advanced / athletic
- Prevalence in adult media
- Niche
- Intensity tier (compliance)
- Explicit
Common camera framing
Description: An extreme asymmetric split: one of the receiving partner's legs is carried up past the head while the other stays stretched flat along the surface. The classical description is literal about the shape, and it demands hamstring range most performers do not have cold.
Variations: The raised leg supported at the calf rather than forced to the head, or braced against the penetrating partner's shoulder. Reducing the angle turns it into the half-pressed position.
On camera: Shot wide and in profile because the split is the entire image. It is a hold rather than a working position and rarely survives more than a few seconds of a take.
AI design considerations: A near-180-degree split with one leg vertical and one horizontal. The pelvis must rotate with the raised leg, since a level pelvis under a vertical leg is anatomically impossible.
Historical provenance
Where this position appears in historical sex manuals, erotic art & literature · full timeline →
- Fixing of a nailIndian (Gupta era) →
Kama Sutra · Vatsyayana · c. 3rd century CE
One leg raised toward the head, the other stretched out.
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, leg_lift, split, kneeling, on_bed
negative: bad_anatomy, bad_hands, censored, monochrome, 2girls, 3girls, 2boys, 3boys
Image to video (Thrust (shallow))
short-range reciprocating motion along the body axis, small amplitude, hips leading, 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 records only that the receiver lies on their back facing the partner, and its wiki's list of leg options (a leg lock, a folded body, or the legs held) never singles out one leg, so it spans the whole supine face-to-face family. It discards the asymmetric split that is the entire content of this entry: one leg carried up toward the head while the other stays stretched flat along the surface, with the pelvis rotating to follow the raised leg. leg_lift and split restore that shape as a posture only.
Fixing of a nailcloseKama SutraAttested source name. One leg raised toward the head, the other stretched out.
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 maintained.
Camera moves that suit the geometry: Locked off, Arc (partial), Pull out.
Related positions
Part of the Erotic Pose Catalog open dataset · CC BY 4.0 · keypoints are idealised COCO-17 templates.