I found this in the front lawn last week.  It’s the 3rd one this year.  Since I’ve never ever seen a giant puff-ball fungus I can’t say for sure that’s what this is. The google images sure LOOK the same.  Not tempted to cook and eat it however similar it looks to the benign puff-ball.

from the side


It doesn’t have any gills or that umbrella shape and the inside is just a white expanse of spongy looking material that smells very faintly of mushroom.

Cut open