Amerikids 3: I’m Getting Really Good At Freehanding Stars
My headcanon for these guys is that, when all their anger issues and emo tendencies came together, it solidified a deep understanding between each of them. Which allows them to be more relaxed than usual. They can just be… kids. The whole responsibility of being the Cap!standin is spread between them so it’s less pressing, and America’s practically indestructible. So they just goof off a lot.
Also, Natasha is their mom-figure. Bucky’s dad. Steve is grandpa.