childish behavior

In practice, as Ginny Hogan at the Nation wrote, it's mostly defined by the childish behavior of men who should have outgrown this long ago: silly memes, lazy trolling and lots of whining.

He accused Democrats of "childish behavior" in trying to force this issue.

Good-looking women provoke sexual insecurities and maximally childish behavior from the right-wing man.

Good-looking women provoke sexual insecurities and maximally childish behavior from the right-wing man.

One way that societal complacency can manifest is the type of dysfunctional and childish behavior we are seeing in our politics.