This is Leo Romano Nery from Brazil. He's currently living in Texas as part of a youth camp exchange program, and he's learning a lot.
On Saturday, Chandler tweeted about Leo's newest trick to learn American English: writing down the slang he hears on the radio and in conversation, so he can ask Chandler what it means later. The tweet went absolutely bonkers.
"I started taking notes, like, four days into me being in Texas," Leo told BuzzFeed News.
Host sister Chandler said the reactions to the tweet have been "all over the place", but there was a lot of positive feedback.
"I did not think that so many people were going to see the post and be trending here and in other states," said Leo. "I'm enjoying America so much. Great food!!!"