No. Firstly they knew his task was to eat slop all day but they make it harder for him by eating cake around him and leaving piece of cake next to him.
Then they goad him by making him out to be boring or scared for not breaking the rules.
Then patronise him by feeding him like a child.
Heavy D could have resisted but then gets labelled as boring by the "cool" kids or he could have stood up to them and been laughed at for being too sensitive or not getting the joke.
Either way Bear is an expert at condescending manipulative and passive aggressive behaviour. This is not fun but means that if you ignore him you look boring, if you play along you look like you've been manipulated and if you stand up to him, you look like you can't take a joke.
Bear is a Bargain Bucket Perez Hilton and needs to be he centre of attention. If you value him as a great comedian, prankster, and all round funny guy you will be safe from his "banter" like Marnie Chloe and Lewis
If you rise to him and play along like Heavy D and Renee he will continue to abuse you.
If you try to be peacemaker like Saira or Frankie he will see this as a weakness and challenge to piss you off and prove you can't control him.
Bear is basically a small-minded, weak individual that needs to ridicule and put down others to validate his existence. He is a very shallow and sad individual but if he took time to work on his own emotions and to value the strengths and weaknesses of others, rather than using them as a source of his own personal, cruel entertainment he could become a more well-rounded and potentially interesting person.