The most erotic behaviour between couples

Not a hug

Not sex

The following actions can make woman feel your most sincere love for her

Tracheotomy

Intubation through oral tracheal tube

Invasive arterial catheterization

Central venous puncture and catheterization

Closed chest drainage

Pericardial puncture

Lumbar (lower back) puncture

Puncture/Incision of the Annular Membrane

External ventricular drainage (from the brain)

Bone marrow cavity puncture and infusion

Abdominal puncture

Joint cavity puncture

Abscess incision and drainage

Percutaneous (=through skin) gallbladder drainage 经 is cut

Intracranial hematoma puncture and drainage 颅 is cut