Internet, be forewarned: Do not mess with King Cairo. The world was in a tizzy on Tuesday over news that Rob Kardashian proposed to Blac Chyna. This all comes down to a complicated family tree that blossomed through Rob's half-sister Kylie Jenner and her boyfriend Tyga, who is also Blac's ex-boyfriend. Fans and haters alike dealt with the distressing news the only way they know how: with tweets about Tyga being the future uncle to his own son. While none of the Kardashians/Jenners have spoken out about the news, Tyga did tweet that he was genuinely happy for Blac. But he added he was concerned and displeased that the Internet would use his "innocent" son as material for a joke. He tweeted, "It makes me happy to see the mother of my son happy.My only concern in this situation is my son."