Additional examples are adjusted to the entries in an automated way - we cannot guarantee that they are correct.
With Blakovich, they created the four-year performance art collaboration Twincest in 2004.
Some HUMP films are entered from out of state, for instance 2010's Twincest was produced by the Atlanta group Le Sexoflex.
The word 'twincest' is used in the 2014 movie Gone Girl about the possibly over close relationship between the chief protagonist (Ben Affleck) and his sister (Carrie Coon).