2008 article on how teens in Baltimore started using ‘yo’ as a gender neutral third person pronoun (often accompanied by a pointing gesture):

queerandpresentdanger:

What’s also interesting about the kids’ language is that people — mostly academics — have been trying to introduce a gender-neutral singular pronoun into the English language for about 200 years, with very little success. And then a group of kids in Baltimore just make one up and start using it.”

Grammar Girl: Yo as a Pronoun

(Source: motherfuckerofbabylon)