yassderday Share definition Flag When something really great happened the day prior. Person #1: Last night's party was lit!Person #2: Yaaassss, yassderday's party was soooo liiittt yassderday by KEMMA SLAY September 16, 2017 0 0 Get merch Get the yassderday mug. Buy Now — $32.95 See more merch
