jermaine dupri feat Ludacris - I think ?

Soung starts out with Dupri doing a rap - then Frankie Smiths double dutch is sampled and then ends with - I think Ludacris doing a rap - The rap references Timmy (South Park) and someone by the name of Chris who makes it big - any ideas?

well to start wit it they were talking about chris...ludaCRIS's real name is Christopher Bridges. but i cant think of any other song yet with both of them on it except welcome to atlanta which i know is not what u are lookin for