Well the question isn't clear, but if you are childish and not being serious and responsible, then you need to straighten out.
have a nice long talk
Try to tell them when they are being rude so they will stop. Being childish isn't always a bad thing.
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.
this is childish = das is kindisch
Childish is puerilis or infans
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.
The duration of Childish Games is 1.37 hours.
Dont be childish?