Apparently when you turn five years old, you're old enough to drink your face off—or at least that's the case with the now five-years-old Portland Underground Film Festival (PUFF), the drinkiest film fest in town. Taking center stage this year is Seth Sonstein, the festival curator and the owner of the Clinton Street Theater.

Thursday night kicks off PUFF with the world premiere of Sonstein's feature Summer of 69, a fun, bawdy sex comedy set in Portland. Stick around afterward for a Q&A with Sonstein and the cast before heading over to the Aalto Lounge (3356 SE Belmont) for a free drink (with PUFF ticket) and dancing.

Grab your bike and a hottie on Friday for two screenings of pornographic bike shorts with Bike Porn 3.0, the late showing of which will finish off with a mystery bike ride.

Saturday opens with Abraham Obama, a documentary about street artists campaigning for Obama in 2008. If a bit long, it features interesting interviews with Shepard Fairey and Ron English. The quality of the films in PUFF's subsequent shorts programs wildly oscillate, but at least Acid Chip, about a dude who accidentally takes acid at a cat's funeral, is charming. Also on Saturday, Portlander Mike Prosser's Recovery screens, with Prosser on hand for a post-screening Q&A. Then grab a free PBR (with PUFF ticket) at the Clinton Street Pub.

Sunday features Crackin' the Code, a "dick flick," followed by two (long) shorts: God of Tears is about a god who must choose between a race of people and a cat (that's no Sophie's choice), while The Kismet Footage is allegedly found footage of a gang of rich kids who staged a murder. That's one way to snuff out PUFF's birthday candles.

See Movie Times for showtimes, and for more info, hit portlandundergroundfilmfestival.com.