1 definition by Coco Loco Croco
In the Song "F*ck the pain away" by Peaches one of the lyrics is IUD SIS then later she mentions to stay in school
the acronym siply means "Stay in School, Injustice Under Dog"
the acronym siply means "Stay in School, Injustice Under Dog"
by Coco Loco Croco October 15, 2008