It’s a reference to an infamous 4 panel comic strip called “loss”. It’s one of them ancient memes from 2008. If I remember correctly, the story of the comic is that the dude rushes in to the hospital to find his pregnant wife had just lost their baby or something. If you dumb it down enough and reduce the characters to lines, you end up with
I II
II I–
Well how else are you gonna visualize those things for the audience. Same with green smell clouds coming off of something or someone who smells bad. It’s difficult to make the audience understand and care about something invisible