How do you change your personality?

We squeal to much over a boy, and then we can't stop laughing when we see some random person. We laugh over maggots and i dont know why.... WE NEED HELP so our guy doesnt think we are stupid.....How do you change your personality?
We? There is another person doing this with you? You ';both'; need calm down in a way. Just tell ';yourselves'; that it isn't funny or picture something that is dreadful to end the laughter...How do you change your personality?
Ok itz just a guy... Just tell yourselves that

pc or mac

kid sweating