What is Rug Pull in Crypto?

[Fidelia]

I hear a lot of people in crypto talking about rug pull. And I don't understand what rug pull in crypto actually implies.

What is Rug Pull in Crypto? Is it a bad or good concept? Can you also give a instance of rug pull and it's effect in recent times?

 

[Suba]

Rugpull is a fraudulent or deceptive technique carried out by developers, by withdrawing the liquidity of a token until its value drops drastically, and investors leave, leaving investors who experience losses.