The clip comes from a 2015 motivational segment performed by actor Shia LaBeouf in front of a green screen for the #INTRODUCTIONS art project with LaBeouf, Rönkkö and Turner. Students were invited to use the footage, and the Just Do It section quickly spread across YouTube and social media as a remix source. Creators placed LaBeouf into movie scenes, sports moments and everyday situations, turning the intense delivery into a reusable reaction. Its mix of sincerity and exaggeration kept it popular long after the first wave of edits.