Alia Shawkat coached co-star through lesbian sex scenes
(New York Post Movies)

Hot off a one-night stand, two women hit on the ultimate relationship test: They´ll spend 24 hours together, spilling secrets and making love every hour on the hour, to see if they´re right for each other. That´s the premise of `Duck Butter.` Opening Friday, it features freckled `Search Party` star Alia Shawkat and the fetching...