"Memento Mori" is a Latin phrase meaning "remember that you will die." It serves as a reminder of the inevitability of death and the transient nature of life. The symbol "💀⏳" can be associated with this concept, representing both the skull (a traditional symbol of mortality) and the hourglass (symbolizing the passage of time). Together, they convey the message to reflect on our mortality and make the most of the time we have.