Butter churner
M/F · Vaginal penetration · Inverted
Posed figure
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Keypoint template
Attributes
- Position family
- One-on-one
- Primary act
- Vaginal penetration
- Partner arrangement
- Inverted
- Penetration type
- Vaginal
- Facing
- Variable
- Dynamics
- Thrusting
- Support / surface
- Flat surface / bed
- Participant count
- Two
- Composition code
- M/F
- Source medium
- Video
- Physical difficulty
- Advanced / athletic
- Prevalence in adult media
- Occasional
- Intensity tier (compliance)
- Explicit
Common camera framing
Description: The receiving partner lies shoulders-down with legs folded back over their own head while the penetrating partner squats above, dipping in and out — the churning motion that names it.
Variations: Legs together or apart in the fold; the squatting partner's hands on the receiving partner's thighs.
On camera: The deep fold and vertical stroke are the shot; a flexibility showpiece adjacent to the piledriver.
AI design considerations: Distinct from the piledriver by the deeper fold — ankles beyond the head — and the actively squatting top figure; the receiving spine curls to near-closure.
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, piledriver_(sex), pelvic_thrust, vaginal, on_bed, legs_over_head
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.
The tag already carries the squat and the shoulders-down vertical fold, so the single feature this entry adds is manner: the vertical dipping in and out that names the churn. The tag is additionally silent on which orifice is penetrated and on the support surface, and it subsumes the catalog's own static piledriver entry, in which the penetrating partner may stand rather than squat and enters downward without the churning motion.
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: Arc (partial), Crane down, Overhead descend.
Related positions
Part of the Erotic Pose Catalog open dataset · CC BY 4.0 · keypoints are idealised COCO-17 templates.