(SPOILERS) Undertale | Sans fight & What Sans says after killing him a fourth time - Genocide run

This is actually my third Genocide Run, so I decided “Hey! Why not be a huuuuuge dork and just show off how easy Sans is to you?“ So yeah, this was my first try in my third Genocide run. After that I decided to kill him two times more, and he just said “You are kind of a freak, aren’t you?“ I was suprised when I also noticed that his dialogue changed at the “Let’s end fightin’“ scene. He says that when you kill him 3 or 4 times in a row, I think... Sorry for me sucking alot by the way.