EDIT For the non-VM fans on my list, a quick guide to each word.
Moxie: "You're admiring my moxie, aren't ya?" "Something like that." The Cassidy/Mac shippers watchword.
Tawdry: "I like this case, it's tawdry." Ah, Cliffie.
Kewl: "UR Kewl". The beginning of Meg/Duncan. A text message from Duncan.
BFF: "Yeah, well, you can B your own FF." Veronica and Wallace are BFFs!
Lamb: Um, DUH.
Awkward: "You should get a codeword for when you don't want to be disturbed. I was thinking 'awkward'." Also, see TWoP and Couch Baron's recaps.