Cas: Ohhhh...damn-you think this has something to do with the shard...?
" Probably."
Cas: ...so do you think maybe that means you should give it back!?
" Can't."
Cas: Why not?
" If I get rid of any shards on his body, poof, one of us will be gone."
Cas: Then why the hell did you do this!?
"Dunno."
Cas sighs
Cas: Well-shit...
"Let him chill."