The orange slice reference
Scott Lang, a.k.a. Ant-Man, is one to always learn from mistakes. In Captain America: Civil War, Ant-Man grew to the size of a giant for the first time. This clearly left him traumatic that only orange slices could cure (weird) after returning to his normal size.
If you’re not sure what this the obsession about orange slices is about, there’s a scene in Avengers: Endgame where Scott offers orange slices to Clint right after his time-travel stint. Scott rushes to Hawkeye and hands him orange slices. Scott knew what Hawkeye would experience and knew that cure was in the vitamin-C-rich fruit.