"Me and Cas." He leaves it at that while he hooks an arm around Sam and helps him to stand up, steadying him and letting Sam put as much weight on him as he needs. It isn't until they're upright that Dean clears his throat, interrupting whatever Sam might have been wanting or trying to say.

"And Meg. Come on, it's kind of a walk, so..."

So let's move and ignore the fact that Dean just casually dropped that into conversation.