Nike ad featuring Oscar Pistorius takes on chilling meaning

(CNN) -- South African sports icon Oscar Pistorius broke into tears Friday when a judge officially charged him with killing his girlfriend on Valentine's Day.

A grim-faced Pistorius, wearing a dark suit, shook uncontrollably with his head buried in his hands during the hearing at a packed courtroom in Pretoria.

Prosecutors say they plan to charge Pistorius with premeditated murder. His girlfriend, model Reeva Steenkamp, was found in a pool of blood at Pistorius' home Thursday in an upscale neighborhood in the capital. The track star was arrested the same day.

Now, a Nike "Just Do It" ad that was created for South Africa in 2011 seems chilling. It's tag line is, "My body is my weapon." Watch it below.