It is unclear what you are referring to with the question "what are you gonna do stab me?" The search results show that this phrase is a quote from a newscast about a man who got stabbed. It has also been used as a joke or a funny T-shirt design referencing Julius Caesar. However, it is important to note that making threats of violence is not acceptable behavior. If you are feeling threatened or unsafe, it is important to seek help from a trusted authority figure or law enforcement.