Anatomy and biomechanics
In this position, the upper body rests on the lower body, using arms and legs to maintain balance and stability. Penetration can be vaginal or anal, depending on the couple's preference.
Why this position works
This position is popular due to its intensity of penetration and the ability to control the rhythm and depth of thrusts. Additionally, it allows for a wide variety of movements and angles of stimulation.
Birthday Party: sexual position with deep penetration
The Birthday Party position is a sexual position where one of the partners is positioned above the other, allowing for deep penetration and intense stimulation of the G-spot and A-spot.
Also known as: Birthday Party/Erotic Celebration/Intimate Encounter
Variations of this position
Classic Birthday Party: The Traditional Version
The upper body is fully supported by the lower one, using the arms to maintain balance.
- The receptive person lies on their back with legs open and bent.
- The penetrating person positions themselves on top, placing their hands on either side of their partner's head.
- Begin penetration slowly, adjusting the depth and pace according to both partners' preferences.
Elevated Birthday Party: More Control and Depth
The receptive person raises their legs, allowing for deeper penetration and greater control.
- The receptive person lies on their back and raises their legs, resting their heels on their partner's glutes.
- The penetrating person positions themselves on top, placing their hands on the ground beside their partner's hips.
- Begin penetration with slow, deep movements, using your partner's legs for support.
Side Birthday Party: Side Variation
Both bodies are placed on their sides, allowing for lateral penetration and different stimulation.
- The receptive person lies on their side with legs slightly bent.
- The penetrating person positions themselves behind, embracing their partner and aligning their bodies.
- Begin penetration with gentle, controlled movements, adjusting the depth according to both partners' preferences.
✓ Tips
- Ensure that both parties are comfortable and stable before starting.
- Use cushions or pillows to adjust height and reduce pressure on joints.
- Communicate constantly to adjust the rhythm and depth according to both preferences.
Key facts
- Interaction type
- Penetrative
- Active anatomy
- Penis / Vagina / Fingers
- Receptive anatomy
- Vagina / Anus
- Main stimulation
- G-spot / A-spot
- Setups and participants
- Couple · 2 people Hetero
Frequently asked questions
Is this position suitable for beginners?
Yes, provided that both parties feel comfortable and take the necessary time to adjust positions and rhythms.
How can I increase the intensity of stimulation?
Experiment with different angles and depths of penetration, and use external stimulation if both agree.
What should I do if I experience discomfort during the position?
Stop the activity immediately and adjust the position or depth of penetration. Communicate with your partner to find a more comfortable position.
Safety and evidence
Scientific context for common terms used on this page. Keeping these terms makes the content easier to understand; the sources clarify what is established and what remains uncertain.
G-spot: what the evidence says
“G-spot” is a widely used term for a sensitive area of the anterior vaginal wall. Scientific literature has not established a discrete anatomical structure with an agreed location, size and nature; sensitivity and response can vary between individuals.
A-spot / AFE zone: limited evidence
The “A-spot” or AFE zone has been proposed to describe a deeper area of the anterior vaginal wall. Available evidence is limited and does not support presenting it as a confirmed anatomical structure.
Last editorial review:
Related sex positions
Suspended Spider
Ecstasy
Amazona on the table
Rider
Deep Ride
The Sprout
Tortoise
Bear Hug
Reverse Cowgirl
The Chameleon
The Crab
