Remember yesterday when we reported that John Mayer "dissed" Ryan Seacrest by smugly breaking into badly-accented Japanese and addressing him as "the Anderson Cooper of E?"

Well, now comes word that Tina Fey has employed similar discretion (albeit more wit) on the subject of her nemesis, Studio 60 creator Aaron Sorkin.

Tina Fey dissed archfoe Aaron Sorkin Sunday night at the Writers Guild Awards. The "30 Rock" star competes with Sorkin's "Studio 60": Both take place behind the scenes at a show like "Saturday Night Live," where Fey was head writer. Wiggling around the Hudson Theatre stage in a party frock with plunging decolletage, Fey told the crowd, "I hear Aaron Sorkin is in Los Angeles wearing the same dress - but longer, and not funny."

Unfortunately for Fey, we heard her "frock" was derivative, overrated and only funny when Alec Baldwin's around.