Yuseiria Share definition Flag A feeling of not knowing exactly what day it is. Normally a symptom of summer vacation or lazy weekends/breaks. Almost always results in somebody asking what day it is. Dude... I have a bad case of yuseiria, what day is it again? Yuseiria by Fuzzdufuz July 14, 2010 0 0 Get merch Get the Yuseiria mug. Buy Now — $32.95 See more merch
