It all started in the 1990s; adult oriented cartoons became something of a mainstream sitcom. Both The Simpsons and Family Guy have poked fun at the culture of America. In a weird way Family Guy is the grandchild of the Tracey Ullman Show, because The Simpsons got their start there.
Several pennants at Moe's Bar can be seen in the background. There is a green pennant that has "SPRINGFIELD" written in black with "ATOMS" written underneath. Another blue pennant can be seen on the wall with "SPRINGFIELD" written in black.
Another red pennant can be seen on the wall atom symbol but has "TOPES" written upon it, which is short for isotopes-the name of the professional baseball team in Springfield.
There is also an orange pennant. The neat thing about this cartoon it was a long time coming. It also seals the bond with the Trace Ullman show.