What is cube airdrop?

Could you please elaborate on the concept of 'cube airdrop' in the cryptocurrency world? I'm curious to understand how it differs from other forms of token distribution and what benefits it might offer to participants. Is it a widespread practice, and what are some examples of successful cube airdrops in the past? Lastly, are there any potential risks or drawbacks that investors should be aware of when considering participating in a cube airdrop?