Nick Cannon lives by one simple rule when it comes to the mothers of his children — whatever monetary requests they have to provide for their children, he provides.During an interview on the St. Louis radio station Hot 104.1's with Shorty Da Prince, Brittish Williams and Andrew Caldwell, the 42-year-old father of 12 inferred that he's on such good terms with the mothers of his children that he's not on child support.«I'm not on the government,» he said, prompting a co-host to react by saying, «That's how you know he really got it together.»The topic came up when one of the hosts jokingly asked how much Cannon's shelling out monthly for his 12 children.