There is a lot of debate surrounding the topic of whether or not drawing on yourself with pen is harmful. Some people believe that it can be dangerous because you are introducing bacteria into an open wound, while others claim that it is perfectly safe as long as you take proper precautions. Personally, I believe that it is safe to draw on yourself with pen as long as you follow a few basic guidelines. First, make sure that the pen you are using is sterile and free of any harmful bacteria. Second, avoid drawing on any areas that are already damaged or infected. And finally, make sure to clean the area thoroughly after you are done drawing. In conclusion, I think that drawing on yourself with pen can be a fun way to express yourself, but you should always take precautions to avoid any potential harm.