I didn't manage to keep it to the limit of 100 words, sorry. But what are rules to writers anyway, right? I don't own.
They were inside him. So hot, so big. Both Winchester brothers looked at him with admiration. He could not disappoint Dean. Sam thought it was a bad idea. Taking two at a time? It surely wasn't good for Castiel's health. Dean argued that the Angel won't be hurt by that, that if he could do it, Cas could as well. It felt good even if it was a bit too much. This part of his anatomy was narrow, but it had to do. He trembled when the offending objects were thrust deeper into him. This feeling was amazing. Too full, but at the same time lacking. He wondered if he could take more. With one move he brought everything to an end.
"See!" shouted Dean enthusiastically "I told you, he could eat two burgers at the same time!"
I'm seriously sorry for this fic; P Review, please?