I can sort of understand why sci lost the plot and threw the water. Only moments earlier, little weazle Kemal has been taunting Sci accusing him of single handedly losing them the first task for eating a grape. Sci rightly said that they failed because of the last day when 6 fails occured, of course Kemal wasnt having any of it and nagged and carried on so much, following Sci into the kitchen area where it all exploded. Ant only shouted as it looked like spiteful Sci just did it for no reason at all.