pakistani gets shifted to US

Once a Pakistani boy shifted to America with his family..
On his first day at his new school his teacher asked him what his name was..
He replied "my name is Mohammad "
His teacher said you are an American now..your name from today will be Johnny.

He went home and his parents asked "how was your day Mohammad?"
He said "I am an American and my name is Johnny and don't call me Mohammad from today"
He got a nice beating from his parents!

Next day at school his teacher asked "How was your first day in America Johnny ?"
Johnny replied "It has been just 24hours since i shifted to America and I was beaten up by 2 Pakistanis"

difference between civil and mechanical engineers

the difference between mechanical engineers and civil engineers is that
mechanical engineers make weapons and
civil engineers make targets to test those weapons!