What do Pixar’s newest animated short and a 17-year-old boy introducing his parents to his boyfriend for the first time have in common? They’re both coming Out.

Pixar, the studio that brought you Onward, Toy Story, Finding Nemo and many others, recently debuted its first film featuring an openly gay lead character on streaming service Disney+.

The movie, called Out, revolves around a young fella by the name of Greg and the pickle he finds himself in when he moves in with his boyfriend...