The scientist got drunk on the pathogen and fucks a lab assistant with big tits in the ass

«A chemist is trying to create an effective remedy for impotence in his laboratory. He tests all the drugs on himself, because he caught a sluggish one a couple of years ago. The next batch gave an unprecedented effect, causing the doctor not only a boner, but also an increase in the penis by 3 times. The laboratory assistant, seeing a big dick, got wildly excited and, spitting on business ethics, gave herself to the scientist in the ass.»