Generally, I believe it has more to do with the fact that any reminder of
his past with England causes America to relive and reminisce over the mixed
feelings and volatile aftermath of his independence. He’d rather avoid
remembering it altogether.

In the case you were asking about, America’s just embarrassed
because England’s having a dream about how he used to wet the bed. It’s not
exactly something he would want everyone to know about.

America wasn’t actually happy. He has a habit of either forcing himself to be cheerful in the face of adversity, or just ignoring bad memories all together!

Post on America’s emotional reaction and grudge over the Revolution coming up tonight!