This is the scientific method that the good Sveta Bilyalova has developed to respond to one of the great dilemmas of humanity: are they real boobs or is it surgery with silicone? A test of authenticity based on two focuses of light pointing to the tits and confirming that the natural remains the same and that it is only implants that “respond” to artificial light.
PS: Genius!!! If a woman gives me that level of access and permissiveness to touch her tits, the least I will worry is to check if they are natural or not. :))