There's a good reason why pretty much everything pit crews and NASCAR drivers wear is fireproof.

That said, if a part of your body were to catch on fire in that situation, you'd probably panic.  That fact is what makes a member of Cole Custer's pit crew's reaction to catching on fire that much more ridiculous.

Such a casual reaction from the gasman which is the exact opposite reaction anyone not trained to be in that position would have. Thankfully the gasman and everyone else was fine and thankfully they were all wearing fireproof gear.
(H/T: FTW)