At first Crabbe pulled the bear from the box and said "What is this? Defense Against Small Children?" but he followed the instructions - granted, totally botching his bear's surgery (St. Mungo's, look out for this future surgeon!). When the bear began to blow him kisses, Crabbe looked rather annoyed and began hitting it vigorously with hexes to try and make it stop. Eventually he put it in petrificus totalus just so it would stop blowing kisses.