It has been said before that you can't break up with your friends (Louis C.K. said this, the legend), but I want to break it off with one of mine. This friend of mine hasn't been invited over in months, but he just shows up at my house randomly, even though no one else in my family likes him and I have told him not to show up without a call. I go to school with him too, so I can't really just ignore him, though I have tried. I'm a guy, so when faced with a problem or conflict I usually just make jokes (like all guys), what should I do?