The Art of Manliness know that our generational eyes attract anything remotely vintage-looking. They also know that despite having phones since we were children or young teens, some people still don't know the proper etiquette for using one. They asked artist Ted Slampyak to make these words of advice stand out in the form of colorful, retro-esque posters. So keep it classy, smartphone user. No one wants to hear you fight with your wife.