But doctor, can you explain what my neck pain has to do with your fingers in my ass?

Today i have a consultation with the doctor and without really understanding why he tells me to take off my pants and get on all fours on the stretcher. i only came for a pain in the neck but i am not able to protest when he starts to put his fingers in my ass without stopping. i like him more and more and his way of fucking my ass non-stop with his fingers makes me more horny. i end up on my knees and with his cock in my mouth moaning like crazy.