Every summer, Vassar’s Powerhouse Theater shines the spotlight on the upcoming voices of the next theatrical generation. Known for his pointed comedies and viral Chloë Sevigny impression, Drew Droege is one of these voices, bringing Hell’s Kitchen drama to Powerhouse’s 38th season with his new play “Messy White Gays.” Directed by Mike Donahue, the story begins with a murder followed by brunch. The play follows Brecken and Caden, who stuff their murdered throuple-mate’s body into a credenza before their friends arrive at their loft.