What is this holy hooleh that 8th Day are singing about?
At VideoStatic I found the following:
8th Day "Hooleh!" (Chaim Marcus, dir.)
The Whole Mishpocha.
8th day is fronted by brothers Shmuel and Bentzi. The video was directed by their brother, Chaim.
The band first made a splash with a video that was featured on Videostatic, called "Ya'alili", directed by Larry Guterman (Antz, Cats & Dogs).
The song is called "hooleh!" from Yiddish slang meaning something like "forget-all-your-issues-just-radiate joy".
Videostatic says it is the world's leading source for music video news and community. It does not claim to be an authority on Yiddish slang.