In Barbie (2023), Ken was upset because President Barbie declared the reinstatement of the Barbie Constitution and the unbrainwashing of all affected Barbies:
Ken: I'm a liberated man. I know crying is not weak.
Barbie: Okay. You wanna sit up for a minute?
Ken: This, uh...It was hard running stuff. I didn't love it.
What does "running stuff" refer to ?