Yeah, um, this is not true. I'm not sure what country you live in or what kind of currency is used there but this is not the case in most places with standardized currency. Just because the head side weighed more does not mean that it is more likely to be heads. In fact, it is a 51-49 relationship, the advantage being to the side of the coin that started up. Look to Numberphile on youtube and their video of "How Random is a Coin Toss"