chuckles.....
there is nothing worse than emptying your mind to everything and then a funny thought just pops into your head and you just cant help but laugh.
And your Master is asking you why you are laughing so much when it is supposed to be an intense moment in time. and you carry on laughing because you just can not get the thought out of your head.
So you tell him because by this stage he has demanded to know what is so funny...and you can see him trying not to laugh also and to stay focased and serious but in the end you both end up laughing away. and the moment in time has gone lmaoooooooooooo