[Dean has never been particularly good at changing subjects without making it seem forced and awkward. He's never been a good conversationalist, either, considering the fact that he has the tendency to cut others off at the knees with some biting insult. This leads to a lack of friends, which in turn leads to loneliness, which subsequently goes down the road to alcoholism.

Dying by liver poisoning really isn't on his to-do list. And besides, if he did, when he came back Castiel would kill him.]

Swimming.

[Dean repeats, deadpan, before sliding into a crooked smile.] ...yeah , guess I can see that. What'd you do before you went all Indiana Jones? Lemme guess - Professor?