Using emojis, or speaking in emoji terms, instead of the traditionally spoken English language #urbanhieroglyphics
#urbanhieroglyphics ie. "I heart you" Instead of saying "I love you";
💩 instead of the single word SHIT, and it is just 4 letters, or speaking the words "poop emoji" as a PC term for shit; future people will see the 💩 emoji and say "look at these urban hieroglyphics, they must have worshipped the same shit emperor all around the world. Here is another shit keychain and matching stuffed effigies"