spray and pray
v. phr.— «Why no respect for people who shoot a lot of paint?…Spray and pray is one of those terms which has a very bad connotation (in most circles) and doesn’t do the tactic justice. It should be—“use the right amount of paint for the job.”» —“Re: Spray and pray vs Manuever and shoot” Usenet: rec.sport.paintball Sept. 3, 1996. (source: Double-Tongued Dictionary)