A douche brigade has occurred when all of the following elements are present:
A. In a single mingling group, the male to female ratio is completly unbalanced with the males dominating; AND
B. Each male is trying to "out-do" all the the others in hopes of coercing the female to engage in sex acts with him; AND
C. None of the males realize what tools they are being.
I was talking to a lady when another male friend of mine comes and starts talking to her, then another, and another. Soon there were 6 including me, I realized I was amidst a douche brigade and I quickly stepped out of the circle. The males were like "white-on-rice" at the scent of a single female.