What is "dirt ball"

Usage examples of "dirt ball".

Do you know, the most provoking thing of all is that they dont even have any idea why we want their little dirt ball.

Until the last frigging Bug on that dirt ball is dead, we assume their defenses are at one hundred percent.

At least it's not a smelly swamp on a dirt ball, and while we've killed a few of them, by accident, they haven't done anything back.

There's not much anthropology on this dirt ball unless you want to study the dynamics of the common roaches when they reach fertile new planets.