Lexus Stagg’s “reverse Darwinism.”

Reverse Darwinism.

When a parental generation’s doomed genetics thwart procreation by ending young progeny’s life prior to child-bearing age so as to prevent future expression of familial shortcomings.

In other words, cleaning up the gene pool by offing your kids.

Lexus Stagg plays a mean game of tag

A Houston woman who was driving a sport utility vehicle toward her children in an apparent game of “chicken” struck and killed her 3-year-old son, authorities said.

“Cars aren’t toys and playing chicken with your kids isn’t a game,” Harris County District Attorney Kim Ogg said in the statement.

Stagg can be seen on surveillance video reversing a white Lincoln Navigator in an apartment complex parking lot as her three small children run toward the vehicle, prosecutors said. When the kids are just feet from the SUV, it moves forward, trapping the 3-year-old under the right front tire.

Authorities said Stagg continued to drive forward and ran the boy over again with the right rear tire of the SUV, which weighs approximately 5,600 pounds.

He was taken to the hospital by ambulance but later died.