This is a strange plant/mushroom hybrid.
Again, this one is rather massive. This could be a distant descendant of today's water melons. ;-) Be that as it may, cutting it into pieces and eating it isn't advised - at all.
Growing in difficult terrain like swamps, deserts or alien jungles, it can be used for decorative purposes or as a unusual landmark.
Hope you like it. Have fun!
If you print this one, feel free to post a make - I'd really like to see how it works out for you. :-)