Scott frequently rubs his body against female strangers in crowded public buses in order to become sexually aroused. his behavior is most clearly indicative of

Scott’s behavior is most clearly indicative of Frotteurism. This occurs when an individual practices of having to be sexually aroused by having one’s hand or body to be rubbed on another person that he or she doesn't know or didn't even asked permission or consent to the person that he or she is rubbing to. An example of this is having to touch a person breast or buttocks that they don’t know.