The end of the universe itself?

They're called micro-black holes for a reason. It's not the amount of mass, but rather the density. It's just they're small and unstable. Also, your first post about black holes had a bunch of errors. You can't be "right next" to a black hole and not feel anything. And the gravitational force isn't exponential, it's an inverse-square relationship.

Unfortunately for your claim density is measured by mass/volume, so once again you need mass to create a black hole. In order to feel the force of a black hole you have to in fact be its pull, imagine a cone. At the point is where all the mass is concentrated (very dense ), unless you step into the area where the ice cream goes your not going to feel a thing (from the black hole that is).