“Ran my first 5!” she captioned a screenshot of a stopwatch showing 5.87 seconds.
“Getting over your fear of pushing it in the beginning is key… once I did that I hit 5!!!!! Usually I run 6 or 7… my first try was 9… and now I did it whoop! 100 metre dash.”
For context, Usain (who, btw, is an Olympic sprinter) crossed the finish line in 9.58 seconds back in 2009. Florence Griffith Joyner is currently the women’s world record holder, after running a 10.49 time back in 1988.
Many were quick to question Brit’s numbers in the comments section, especially since the singer broke her foot live on camera just a couple of months ago.
"I'm confused! 100 metre dash? You mean 50 metre dash? Or 40 yard dash? Something ain't adding up. Sorry for being lost." one user wrote.
Another added: "How far did you run I am confused Britney explain.”
Die-hard fans, on the other hand, were seriously impressed.
“It’s a shame the Olympics are cancelled,” one comment read. "Fastest person to ever live,” read another.
Never change, Britney.