Well the question isn't clear, but if you are childish and not being serious and responsible, then you need to straighten out.
Try to tell them when they are being rude so they will stop. Being childish isn't always a bad thing.
have a nice long talk
The state or quality of being childish; simplicity; harmlessness; weakness of intellect.
no you won't be clever if you are childish.
a person who is not mature and is childlike
I have to admit that I can get very childish about signs sometimes. my brother is very childish.
Childish is puerilis or infans
this is childish = das is kindisch
yo mama haahahah grow up stop being childish
Being teased, made fun of, humiliated, or in some cases even physically abused not in a drastic way but in a childish way.
Dont be childish?
The duration of Childish Games is 1.37 hours.