The Chairman

M/F · Vaginal penetration · Seated

Posed figure

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Keypoint template

PenetratingReceivingCOCO-17 template · schematic, not to scale

Attributes

Position family: One-on-one
Primary act: Vaginal penetration
Partner arrangement: Seated
Penetration type: Vaginal
Facing: Front to back
Dynamics: Riding
Support / surface: Seated on furniture
Participant count: Two
Composition code: M/F
Source medium: Video
Physical difficulty: Low
Prevalence in adult media: Common
Intensity tier (compliance): Explicit

Common camera framing

Side profileWide / full bodyLow angle

Description: The penetrating partner sits upright in a chair and the receiving partner lowers into the lap facing away, feet on the floor either side. The chair back supports one partner completely, so all the movement comes from the receiving partner's legs.

Variations: Feet on the floor, on the chair rail, or knees on the seat. Leaning back against the partner's chest or forward onto the knees changes the depth.

On camera: The chair sets a fixed height and the outward-facing body leaves the front fully open, which makes this one of the most reliable setups on any furnished set.

AI design considerations: A seated figure in a chair with a second figure lowered into the lap facing away, feet reaching the floor. Draw the chair: without it the lower figure has no support and the height is unexplained.

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, reverse_upright_straddle, sitting_on_lap, straddling, sitting, on_chair

negative: bad_anatomy, bad_hands, censored, monochrome, 2girls, 3girls, 2boys, 3boys

Image to video (Ride (bounce))

upper figure rises and drops vertically, thighs driving, torso upright, 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.

Expected figure count: 2. Global pose conditioning does not make a diffusion model count bodies. Count figures and limbs at full size before judging quality, because thumbnails hide the failure. The tag reverse_upright_straddle is broader than this position: reverse_upright_straddle fixes only that the receiving partner sits on the penetrating partner's lap facing away and is entered from behind, and it is the tag the catalog's seated-rear-entry entry owns, so it covers couch and floor seats as readily as a chair. It discards the upright chair that carries the seated partner completely and the receiver's feet planted on the floor either side, which together put all of the movement in the receiver's legs; on_chair and straddling restore those only as separate postures.

Identifiers in other vocabularies

How this position is denoted elsewhere, and what each mapping discards. Full table in the crosswalk.

reverse_upright_straddlebroadershared with 1 other position
reverse_upright_straddle fixes only that the receiving partner sits on the penetrating partner's lap facing away and is entered from behind, and it is the tag the catalog's seated-rear-entry entry owns, so it covers couch and floor seats as readily as a chair. It discards the upright chair that carries the seated partner completely and the receiver's feet planted on the floor either side, which together put all of the movement in the receiver's legs; on_chair and straddling restore those only as separate postures.

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.

Idle / micro-motionPose settleApproachDisrobeCaressKissEntryThrust and holdRide (bounce) (characteristic)Ride (grind)Grind (circular)Grind (rocking)Manual strokeRepositionClimax reactionAftermath

Camera moves that suit the geometry: Push in, Arc (partial), Locked off, Tilt reveal.

Also known asupright chair sitoffice chairseated back to front

Related positions

The Corkscrew The Drill The Fitter-In The Frog The Gap The Hinge

Back to Catalog Use in Generator

Part of the Erotic Pose Catalog open dataset · CC BY 4.0 · keypoints are idealised COCO-17 templates.