psychology*
and yes Ive seen a movie when the guy spurts reallll long into a girls mouth, it was enough to make her cough cause she was really choking, she was a blond milf, and after she stopped choking she started laughing
You shouldn't correct someone when you're wrong, psychology is the study of the human emotion and intellect, peoples tendencies and why they do things etc. Physiology is the physical make-up of something. Same meaning as psychology, only in the physical sense.
Oh, and if you read Wikipedia, and got over that elitist pompous predisposed attitude, you'd know that.