Before Simba had the chance to realize that the gang of chamilions had surrounded him, they pounced and clung to his body like... well, things that cling. He knew they were out for vengence, and that they were doing this for their friend Phil who had been so scared the other day that he had died of a tiny heart attack, and all Simba could do was suffer the consequences.
The lizard in the gorge wasn't the first encounter Simba had had with these cold-blooded assassins!