This goes way back to the 2001 OU-Texas game. OU led 7-3 and, after a Sooner punt, Texas took possession deep in its own territory.
In the sideline huddle, Sooner DC Mike Stoops told safety Roy Williams to blitz but to not leave his feet.
Williams left his feet.
Per The Oklahoman:
(https://www.oklahoman.com/gcdn/presto/2021/10/07/NOKL/e2944a09-09ad-47b5-9a79-1b26714594e4-Roy_Williams_Superman.jpg?width=660&height=539&fit=crop&format=pjpg&auto=webp)
Williams flew through the air, hit Texas QB Chris Simms, causing the football to float into the air, where it fell into the hands of Sooner linebacker Teddy Lehman, who took it into the end zone, preserving a 14-3 win.