I find it a bit strange personally that you want to go around labeling certain guys as "bad guys." I find it especially strange that you want to put sarcastic people into this category. While I suppose there are some qualities that almost everyone would consider bad (like a propensity toward murder, for example), a lot of things you would consider bad in a potential mate for yourself might not be bad or may even be considered good by others. For example, I certainly know people who do not consider being sarcastic to be a negative trait at all. Furthermore, everyone has different traits, some of which can be considered more good and others less so (judged differently by the person judging) and the presence of those traits does not make one a "bad guy." Except in the most extreme circumstances, most people's "bad" traits do not make someone a bad person and are just areas where the person my be able to improve themselves or even deal breakers for a specific potential partner but certainly not a "bad guy."