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Physical effort: Medium Posterior

Penetration chain: a kneeling line of four, each entering the person in front

The penetration chain is a group position in which four people kneel in a straight line on a wide bed, all facing the same way. The person at the front is on all fours and only receives; each of the others kneels upright behind the person ahead and penetrates them. The people in the middle therefore penetrate and are penetrated at once, which usually means anal penetration for them, or a strap-on for anyone in the middle without a penis. It takes coordination, consent from everyone and careful condom use.

Also known as: Sex train · Chain of pleasure · Daisy chain

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Illustration of Penetration chain: Group position for four or more: the front person is on all fours and everyone else kneels upright behind the person ahead, so those in the middle penetrate and
Anatomy and biomechanics

The front person is on all fours on the bed, hands and knees on the mattress and back flat. The second person kneels upright directly behind, knees apart, hands on the front person's hips, and penetrates them vaginally or anally. The third person kneels behind the second in the same way and penetrates them, and the fourth does the same with the third. The people in the middle are held in place between two bodies, supported only by their knees and their hands on the hips in front, which makes their balance the trickiest. Nobody faces anyone else. Each link pushes the one ahead, so the rhythm has to be shared and kept small and steady.

Why this position works

Some groups enjoy the sense of a shared rhythm running through everyone, and the novelty of a position in which the people in the middle give and receive at the same time. It is more about play and coordination than comfort, and many groups use it briefly before changing to something more relaxed. Sensations vary from person to person.

Sensory Exploration Medium Penis-Anus Configuration Penis-Vagina Configuration

Variations of this position

Variation 1: Chain of three, with one person in the middle

The same kneeling line, but with three people: one in front on all fours, one in the middle and one behind.

With only one middle link the line is shorter and steadier, and the rhythm is easier to coordinate.

  1. The first person gets on all fours on the bed.
  2. The second kneels upright behind and penetrates them, hands on their hips.
  3. The third kneels behind the second and penetrates them anally, with plenty of lubricant.
  4. The last person sets a gentle pace and the others follow.
  5. Stop as soon as anyone asks.

Variation 2: Front person lying down, face down on a cushion

Instead of being on all fours, the person at the front lies face down with a cushion under the pelvis.

The front person rests on the mattress and the line sits a little lower; the person penetrating them leans slightly forward, supported on their hips.

  1. The first person lies face down with a firm cushion under the pelvis.
  2. The second kneels between their legs, leaning forward, and penetrates them.
  3. The rest of the line kneels behind, as in the basic position.
  4. Keep movements short so no weight lands on the person lying down.
  5. Check together that nobody is uncomfortable.

Variation 3: Rotating places, everyone tries each spot

After a while the line breaks up and everyone changes places, so each person can be at the front, in the middle or at the back.

Each spot is held the same way; what changes is who is in it, which means changing condoms at every rotation.

  1. Start in the basic chain, in an agreed order.
  2. When someone asks, break the line up calmly.
  3. Remove and discard the used condoms and put on new ones.
  4. Form the line again in the new order, without rushing.
  5. Respect anyone who does not want a particular spot.

✓ Tips
  • Agree beforehand on who goes where and on a stop word, and make sure everyone gives clear, ongoing consent.
  • Use a new condom for each partner, and never move from anal to vaginal penetration without changing condoms.
  • Anal penetration needs plenty of lubricant, preparation and a slow pace; anyone in the middle should be comfortable receiving anally.
  • Keep movements small and coordinated: strong thrusts from behind can bend a penis if it slips out.
  • Pad the knees and stop at once if anyone loses balance or feels pain.
  • If someone in the middle uses a strap-on, clean the toy and cover it with a condom between partners.
Interaction type
Group chain penetration from behind
Active anatomy
Penis (or strap-on) of each penetrating person
Receptive anatomy
Vagina or anus of the front person; anus of those in the middle
Main stimulation
Vaginal or anal penetration from behind; anal penetration for those in the middle
Setups and participants
· 4 people In group

Frequently asked questions

How many people does it need?

At least three: one at the front, one in the middle and one at the back. This page describes four; the chain can be longer, but the more people, the harder it is to stay balanced and coordinated.

Why do the people in the middle receive anally?

Because they are penetrated from behind while they themselves penetrate the person ahead. Anyone in the middle without a penis can use a strap-on.

Who sets the rhythm?

It is shared. In practice the person at the back sets a gentle pace and the rest follow; agree on it out loud.

How do we stay safe with condoms?

One condom per person per partner, change it when switching partners or switching from anal to vaginal, and use plenty of lubricant.

Reviewed by the editorial team ·

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