I just found out this past Monday was a Bitcoin Pizza Day, a seven years ago a guy name Hanyecz, who bought two pizzas for 10,000 bitcoin, today bitcoin is worth over 2000 US dollars so that make that 10,000 bitcoins worth more than $21 million Us dollar today. I can't imagine myself ever spend that much money on anything. Later on I found out that there are more to this story, its turn out that pizza was a first completed purchase with bitcoin although he didn’t buy it directly, he had to exchange his bitcoin to somebody first for the pizzas but it prove that bitcoin is real work. To celebrate the Bitcoin Pizza Day I ordered pizza for lunch today and try to pay it with my silver coins. lol