Tracy states several times that he is 39 years old. However, in Ludachristmas (2007) two years earlier, Tracy's age is shown as 34 on the computer screen at the company enforcing his alcohol-monitoring ankle bracelet, which should be accurate as it comes directly from the court.
When talking about the ages of black people Toofer says that Samuel L Jackson is 61, when at the time of airing he was months shy of his 61st birthday and was only 60.
It's a strange character oversight that Jack, despite being the biggest GE/Sheinhardt Wig Company/NBCUniversal loyal company man in the series, wasn't aware of the highly successful Universal Picture & Universal Music joint venture feature film "Mamma Mia!".