What have you only discovered was abnormal as an adult? I'm surrounded by an overtly sectarian culture, and sometimes I can't help feeling a bit crazy when something as basically not ok as "talking to female employees about their distracting tits" is totally normal. Most of my amusing anecdotes about the people one runs into in a day are only funny if you're also from this particular religious culture. What sorts of cultures do you folks live in, and what sorts of things either seem weird to you about the wider world or only seem weird about your own culture now that you're older and have a more worldly perspective?