It is once again time for our collaboration with the ever-amusing What Is It? Blog! Do you know what this object is? If not, can you fake it?

Place your guess in the comment section below. One guess per comment, please, though you can enter as many as you'd like. Post no URLs or weblinks, as doing so will forfeit your entry. Two winners: the first correct guess and the funniest (albeit ultimately wrong) guess will each win a T-shirt from the NeatoShop.

Please write your T-shirt selection alongside your guess. If you don't include a selection, you forfeit the prize, okay? May we suggest the Science T-Shirt, Funny T-Shirt and Artist-Designed T-Shirts?

Check out the What Is It? Blog for more clues, and more mystery items. Put your thinking cap on, and good luck!

Update: the very first answer was correct -it's a form for baking bread (or a "bread mold" which sounds like a fungus). Anker wins a t-shirt from the NeatoShop for knowing that! The funniest answer came from The Professor, who said, "It’s a good old-fashioned can of whoop-ass!" he wins a t-shirt, too! See the answers to all the mystery items of the week at the What Is It? blog.