The battle cry for idiots everywhere. Made famous by the "musician" (if you can even call him that) Soulja Boy. Usually used when telling somebody to Crank That (insert whatever the kids these days Crank to here).
Pronounced as "YOU" with the 'u' sound emphasized and elongated.
soulja boy up in dis ho
watch me crank and watch me roll
watch me crank dat soulja boy den supaman dat ho
now watch me
YUUUUUUU
crank dat soulja boy
YUUUUUUU
crank dat soulja boy
YUUUUUUU
crank dat soulja boy
YUUUUUUU