Snake egg?

...not quite. Gunnar and his best bud were playing in the sandbox today. Gunnar came running in and said they had found an egg in the sand. I quickly went to check it out. They had it dug up and in a pail filled with sand and water. It was about 3 inches long and 2 inches across and oval in shape. It was slimy. It was smelly. It was gross.
I poked at it with a stick and it felt kind of leathery. It had a greyish thing poking out one end like it was starting to hatch. Yuck. Had I been more brave, I would've dissected it. However, I just chucked in in the trash and then proceeded to have the boys disinfect their hands, then I cleaned the toys they had the grotesque thing in.
I thought tonight that I'd look up snake eggs and see if that could've been what it was. It does resemble them, but after a bit of poking around I found this.
http://en.wikipedia.org/wiki/Phallus_impudicus

I think this is indeed what we had going on. It makes sense because it says that this type of fungus grows near rotting wood...check.....and in moist garden areas....check. Also called a stink horn. I dug around to make sure there were no more. I found 1 smaller one attached to the wooden frame of the sandbox. Grossest thing ever.