Although one of Bobby's favourite pranks is freezing people's food, he doesn't tend to do it with Scott. Mostly because Scott's response is just sadly tapping the ice, but also because he remembers him being underfed.
It was so funny the first time Bobby had frozen someone's food. It had been Hank's. The table had erupted into laughter as Hank spat out the ice cube that was once his bite of cereal. He scowled at Bobby who had been howling with laughter, tears going down his face. After a moment of everyone else laughing, Hank finally let in and laughed as well. Bobby didn't do it too often because he knew if he did it all the time, he'd either get in trouble or lose the magical touch of it.
The second time he did it, however, it wasn't as funny. Scott had been taking a drink of Coke and frowned when he looked back down to a chunk of ice on his plate. In the center of the ice was his food, a plate of spaghetti. He took his fork and stabbed at it, a solemn kind of sadness on his face. Everyone else was laughing, even Rogue, so Bobby thought nothing of it at first. It wasn't until after dinner when Bobby realised Scott had never gotten a new helping and instead scraped the ice chunk into the garbage. Professor Xavier had pulled Bobby aside later that night and had a serious talk with him.
A few months later, and Bobby had almost forgotten what Xavier had told him. He had frozen Scott's food again and while the table was laughing, Bobby stopped and remembered. His stomach sank as he watched Scott poke at the food and he realised now that the solemn sadness was more than that. There were horrible memories going through Scott's head and he was probably fighting back tears. Bobby had never felt so disgusted with himself in that moment and he really wished that Evan down the table would stop laughing. He really wanted to tell everyone to shut up, that it wasn't funny, Idie! You should be ashamed, Dazzler! His chest felt tight and he knew if someone tried to ask him what was wrong, he would probably start crying. Later that night, he went up to Scott and apologised without giving away just how much he really knew.
He went to bed that night, stomach tight with guilt. He hadn't been able to finish his meal knowing Scott wouldn't be finishing his. He dreamt of Scott when they first met, unbelievably skinny and unbelievably shy. He dreamt of Scott trying to eat his only meal of the day back in the orphanage and him coming along and freezing every bite that Scott tried to eat. He dreamt of days the orphanage didn't give Scott any food and he resorted to sucking on ice cubes to curb the hunger pangs.
When Bobby woke up, he felt worse than ever and he knew he had to apologise to Scott again. He walked down the hallway and knocked on Scott's door. When Scott opened it, he looked just as haggard as Bobby felt. Swallowing his compulsion to crack a joke and then scurry away, Bobby put his hand on Scott's shoulder. "I'm really sorry about last night," he forced out. "Let's go get something to eat. I want… I want to make sure you eat because… what I did wasn't right and… I guess I forgot all about how it was when you first showed up and I'm sorry. No one should be deprived a meal."
Scott's smile was all the thanks Bobby had ever needed.