You've got definition of what an airdrop is.
I just want to remind everyone that's into airdrops that be careful of the airdrop you are joining. Many of them aren't true to what they say and likely to scam people, don't give them ETH/BTC if they are asking you to send them.
Thanks for the remind, and yeah and most of time they will send you some scam tokens back to you, which are worthless.
I always try to keep away myself from this kind of scam people's, seems they are every where.