For some of you (especially those from the Northeast), that marshmallow substance called "fluff" is nothing unusual.  If you're partial to the stuff, you may have even heard of the "What the Fluff" festival, which takes place every year in Somerville's Union Square—birthplace of the famous fluff.

If you (like a few of our own correspondents) have no idea what we're talking about, read up on fluff here.  Then check out our photos of this year's festival from last Saturday.

Photos by Jabulani Barber/The Harvard Crimson.