To test flexor digitorum superficialis, one finger is flexed at the proximal interphalangeal joint against resistance, while the remaining three fingers are held fully extended (to inactivate flexor digitorum profundus).
Because we are too, obviously. Today Pixar Animation Studios announced updated release dates for each movie, so here they are so you can mark your calendars accordingly: The Incredibles 2 will come out June 15, 2018 and Toy Story 4 will come out June 21, 2019. Toy Story 4.
That being said, there's certainly more adult interest in Incredibles 2 than Cars 3, so there are many fans (including myself) who are probably celebrating this update. Right now, Pixar has a claim for the weekend of June 15, 2018, so one must wonder if this means that date will eventually belong to the studio's superhero-filled sequel.