This guys reaction to hearing top fuel for the first time is nothing short of spectacular!
They say there is a first time for everything and they are not wrong, just like in this case.
They also say when in Rome, do as the Romans do, and this is something this guy should really have listened to. We do not know what he is thinking standing so close to the wall without using his earplugs, but that just obviously tells us how inexperienced he is on this subject.
We are sure he has been warned by his buddy that it gets really loud but he was not even thinking it could get this loud. The guy filming him knows that there will be some reaction when all that noise generated by these extreme machines hits him.
Sure enough after his funny reaction the first thing he does is reach for those earplugs, he learned that lesson apparently.