Charlie Lee created the word "flappening" at the beginning of 2018 to refer to the time when Litecoin (LTC) overtook BCH in terms of market capitalization. It is a lighthearted pun on the term Flippening. A cryptocurrency's market capitalization is roughly calculated by multiplying its circulating supply by its current market price, though some calculations exclude lost coins or tokens. Since the first Flappening that happened in 2018, the word has been used to refer to the encroachment of other significant cryptocurrencies. The Flappening Watch allows you to keep track of the Flappening's progress.