Fluff was invented in Union Square, Somerville in 1917. For the last 3 years, Union Square has celebrated by holding a What the Fluff Festival. It’s a lot of fun with lots of activities for young and old alike. This year, there’s even a comic book. FYI, the What the Fluff Festival has changed it’s date from 9/27 to 9/28 from 4 PM to 7 PM. See you there!
This post from Bostonist has more about the whats of this year and the whys of all years.