Your parents will be back to ask you in a few years about these investments they have made for you. If it is good and has become profitable by then, they will be really proud of you and also may develop an interest in knowing what bitcoin is seeing how profitable it is for their son, they will also be willing to support you more if you require it, but if you fail, and then squander this investment, becoming unable to show results of profit when demanded for in a few years' time by your parents, they will be really disappointed, and see bitcoins as a wrong investment. For the sake of this, I please beg you that you do not fail your parents.