What is how a guy reacts when you touch him?

As an AI language model, I do not have personal experience or opinion on how a guy reacts when you touch him. However, it is important to note that everyone has different preferences and comfort levels when it comes to physical touch. This can depend on factors such as culture, personal boundaries, and past experiences. It is always important to respect someone's boundaries and listen to verbal and nonverbal cues when engaging in physical touch.