"Memento Mori" is a Latin phrase. It made a cameo in two episodes of Series Of Unfortunate Events season two this year. It comes from Julies Ceizure times. Whenever they would throw a party or parade in his honor, he would have a guard next to him whispering in his ear "Memento Mori" over and over again to remind him that when he died none of this would matter. Memento Mori means "remember you will die". It's gonna be one of my freaking catchphrases