I wouldn't let my kids listen to it uless they were 15 years old or older. I have young kids and they would never listen to this, way too inappropriate for a 4 or 9 year old.
This CD is pure fun, something you can dance and be wild to. True, the lyrics are pointless and sometimes crude but none of it is suppose to be taken seriously. To say no kids is kind of ridiculous, I would say this is for kids 14 and up.