Grass Like Bulb
My neighbor a few doors down has their whole lawn covered in some sort of grass. However I dug it up, and it's actually growing from what appears to be a marble-ish sized white-ish bulb. And off of the main bigger bulb are several smaller baby bulb-lets. The grass blades themselves are pretty thick, and seem to hold water, as they get slimy when cut (as they tend to let it get pretty tall before having it cut.) The blades have a white/clear-ish strip in the middle of the blade that tends to fold in over itself.
They claimed it was midnight Kentucky bluegrass, but I disagree, as that comes from an actual grass "seed", and these are not seeds. I'll try to get a picture soon if I can.