Below is a new sneak peek of tomorrow night's "Carrnal Knowledge."

It's actually more of an extended version (a minute longer) of the first preview we posted on Friday, in which Chuck tries to recall his previous night's endeavors.

Follow the jump to check out the clip obtained by Entertainment Tonight. Here's Chuck, with a little help from Nate and Vanessa, trying to piece things together ...

[video url="http://www.tvfanatic.com/videos/carrnal-knowledge-sneak-preview-4/" title="Carrnal Knowledge Sneak Preview #4"][/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.