…obnoxious, unfriendly, annoying, suspicious, smelly, confusing, politically questionable, disconcerting, pernicious, creepy, putrid, dismaying ex-boyfriends, people who want to be your boyfriend who you don't want as a boyfriend, hamsters, people who dislike Mogwai, that girl who laughed at your hair extensions, insurance salesmen, your ex-husband's second wife, your ex-wife's second husband, turtles, astronauts, nose-pickers, people with ugly anime characters as their buddy icon or just about any people you would like to block.