my daughter's invented a friendship symbol for her and her best friend that they use to identify as pals. secret code! you, too, can invent symbols and arrange them into a code for clandestine communication.
who would've thought that washing your clothes properly would require a visual language? this looks to be a code comprised of icons [with somewhat low-motivation] and symbols.
and then there's this bit of humor below, poking fun of how highly coded and exclusive these signs are.
thanks to lisa j. maione for the images!