C.h.u.n.k. 666

DCLXVI) is a tall bike and chopper bicycle club based in Portland, Oregon and Brooklyn, New York.

The bicycles are home-made using salvaged bicycle parts and a variety of methods, including welding; they are described as "bikes that have 9-foot (2.7 m)-long forks and are built to come apart after 3½ miles, or are 9 feet (2.7 m) tall, or lean back so far that it doesn't look sane - let alone safe - to ride".

666 held Chunkathlons, public tournaments featuring competitions for modified bicycle riders, from 2002 through 2006.

Events included tall bike jousting, derbies, baby rescuing simulations, and historical re-enactments.

[5] [6] [7] [8] [9] They launched "Aquachopper Expeditions" from 2004 through 2012, which involved constructing amphibious human powered vehicles, riding them to and across the Willamette River, and camping overnight on Ross Island in Portland, Oregon.