running the 40 barefoot

I was at a football camp, and they decided to time our 40’s, and I ran my first 40 with my shoes on. I got a 5.3.

on my second 40, i took off my shoes, and shirt, and ran a 5.00.

anything like this ever happen to yall. and i timed this 40 onTURF , which i dont think that makes a big difference