It's once again time for our collaboration with the wonderfully entertaining What Is It? Blog. Do you know what the pictured item is? Can you make up something totally wacky? That's what we're looking for: the funniest and most creative guesses. We will award t-shirts from the NeatoShop to two commenters who post the cleverest, funniest, or most outlandish use for this thing!

Place your guess in the comment section below. One guess per comment, please, though you can enter as many guesses as you'd like in separate comments. You have until Friday evening to come up with great guesses.

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

See, you don't have to know the answer to win! There are more pictures of this thing at the What Is It? Blog. Good luck!

Update: the item pictured above is really a can opener. Our readers had many more imaginative ideas! Sandyra said it a “an antique sundial pizza cutter, because it's always time for pizza!” That’s good for a t-shirt from the NeatoShop! And so is Drew 2’s answer, “Undeniable proof that Trekkies existed as far back as the dark ages.” Congratulations to both! Get the answers to all the mystery objects of the week at The What Is It? blog.