Dean wasn't aware of how close he was to the edge of the table until Sam yelled at him, unable to save himself, he slumped off the edge, unfortunately for him the dog had woken up slightly a little while and decided to belly crawl to the other side of the room, so Dean ended up landing on the floor.
Dean could vaguely tell what Bobby was yelling at him, so he drunkenly attempted to look contrite, Bobby seemed to accept that, at least until Sammy said something to him, Dean blearily glared at his excessively helpful brother, he just knew that Bobby's lecture ability had been enabled by what Sam had said, which left poor Dean in a bind, he decided to just use the yes code for whatever Bobby was saying.
After what felt like half an hour, though it was more likely five minutes, Dean started to feel sick to his stomach, thankfully it seemed as though Bobby was finished, so he meowed the bathroom code, alas for him, Bobby still didn't know the codes off by heart, so valuable time was wasted clarifying what it was about, too much time.
Dean couldn't hold it in any more, lurching forwards slightly, he proceeded to heave what he'd had for dinner onto Bobby's boots, he barely registered Bobby pulling away from him, instead he made his way to the most comfortable looking spot, he was over the whole hellhound wannabe thing, he just wanted to sleep, and her fur looked very comfortable.
He vaguely noticed as Castiel decided to follow his example, watching the furry angel get ready to sleep, he slowly drifted off himself.
TBC