Nick was aware that something was happening to him and tried to flee - but he found himself rooted to the spot, unable to move! He felt his body shrinking, while at the same time fur was growing all over his body.
Looking down at his bare feet that were held fast by magic he saw that they were becoming prehensile, his big toes becoming more like thumbs. a long furry tail snaked out of a tear in his pants (His clothes were shrinking to fit his body).
Finally he felt his jawline extend slightly. Feeling his face, he realised what was happening. He has prided himself on being as agile as a monkey, now he had become one!