It depends. If someone goes out of their way to buy you something, especially for you, and tries giving it to you, you should take the gift and thank them. If you were to say no to them and tell them to go get their money back, that's kind of humiliating on their part. But if they try giving you something such as money, then yes, it is okay to tell them politely that you do not wish to take their hard earned money.
To politely ask someone for their address to send a gift, you can say something like, "I would love to send you a gift, could you please share your mailing address with me?"
They tend to tell a white lie and say that they have something else on at the date or time.
A ring.
A ring
A ring.
Say thankyou for the invite, but then say that you don't really feel like attending.
To get gifts on ASk.fm you need to sign up and request politely for a gift.
A ring
You should not refuse to do something that your parents tell you to do
You can't get yourself a gift, you have to receive a gift from a friend who is a member. Ask them kindly and politely for a gift and maybe you'll receive one!
To politely decline a money gift, you can express your gratitude and explain that you are unable to accept it for personal reasons. You can say something like, "Thank you so much for your kind offer, but I prefer not to accept money gifts at this time. Your thoughtfulness means a lot to me."
If you refuse to give the gift back and they are able to state a claim that they didn't mean for you the property rights to the gift, yes.