An Arab student emails his dad:

Dear Dad,
Berlin is wonderful, people are nice and I really like it here, but Dad, I am a bit ashamed to arrive at my college with my pure-gold Ferrari when all my teachers and many fellow students travel by train.
Your son, Nasser.
The next day, Nasser gets a reply to his e-mail from his dad:
My dear loving son,
Twenty million USD has just been transferred to your account. Please stop embarrassing us. Go and get yourself a train too.
Love, your Dad