I volunteered to the School of Dental Hygiene for their students to use me during their final year exam. The students are all SYT in their early 20s.
One of them called me up for practice session before the actual exam, the sessions took 4 hours and I was given a sun glasses to protect my eyes from the bright spot light. That allow me to open my eyes and stare at the SYT face just 1 feet away from me.
As the dental chair was set to almost flat, my head was just nice at her chest level. At times, her boobs will press against my head or my face when she tried to adjust herself to clean my teeth.
And the best thing is that, I get paid at the end of the session