Why does Kenny think the back of the couch would be a safe place for him to hide?

Kenny thinks the back of the couch would be a safe place to hide because it provides a concealed spot where he believes he won't be easily seen. The couch's structure offers a barrier that can obscure him from view, making it a strategic choice for evading detection. Additionally, he may feel that the coziness of the space adds to his sense of security in that moment.