I’ve been stumbling over all kinds of attempts at Thanksgiving Humor, and decided to post (all) this at MetaFilter:
Since the passing of Art Buchwald (previously on MeFi), we’re looking for something to replace his traditional Thanksgiving Humor Piece (seen here), with varying success. MeFi’s Own rstevens has a collection of LOLGRIMS, MeFi’s own Lore offers some catering services for the 21st Century (previously here – featuring the next step in Turducken evolution). Formerly MeFi’s Own Lileks has a cheap video on how to make a cheap Thanksgiving dinner. A faux-conservative blogger (who’s no Colbert) suggests renaming the holiday. The "Creatures in My Head" guy has his own disturbing version of a turkey. A video game site has games that (kinda) fit the holiday. A semi-NSFW site for dudes has the Worst Thanksgiving Dishes (not sexist, but PETA-ist and NPR-ist) But the most obvious Thanksgiving tradition (via YouTube) is the WKRP Turkey Drop (and aftermath).
Also, 23 Things That Sound Dirty At Thanksgiving, But Aren’t ("It’s Cool Whip time!"), The Naughty American (NSFW) suggests substituting "envy" for "thanks", and a Thanksgiving Horror Story that may or may not be a piece of really dark humor. Funny Thanksgiving crafts include a knit turkey hat and a centerpiece made from tampons. Better-than-most comics about cranberries, stuffing and stuffing again. And for the convenience of commenters in this thread, Thanksgiving ASCII Art! (with obnoxious MIDI sound, no surprise).