You know how when you type certain words like "congratulations" on your Facebook status update or in a comment you get cute little animated displays? According to Mashable, there are more words that will now trigger those effects when you type them in your status update or in a comment you post. Here are the new additions: "rad," "bff," "lmao" and "thank you so much." There will also be animated reactions to responses to "life events."
— Mashable Tech (@mashabletech) October 23, 2017