"I'll give you 2 BTC if you send 1 BTC."
Why would I give you 2 BTC if you gave me 1 BTC? In what world would I give you 100 dollars if you gave me 50?
Greedy dumbfucks. I should fucking run a scam and take your cryptocurrency too. How so fucking stupid are you to believe that you are going to get more money FOR FREE doing absolutely nothing and immediately for that matter?
Send me 500 ADA, I will give you 1,000 ADA. kthxbye!