Did you know that people who become blind after birth can see images in their dreams? Or, that within 5-minutes of waking, people usually forget 90% of their dream? What about the interesting bit about us dreaming only about people we've seen before at some point in our lifetime. Click here to view the first image in this week's funny exam answers and school pictures gallery. Continue reading for a viral video of a duo playing a legendary song on a huge piano.