Butters tells Cartman that he watched all three seasons of Game of Thrones (2011), and the dragons never show up. Actually, the dragons appear in many episodes, starting from the finale of Season 1 Fire and Blood (2011), though they are still not big enough to ride on.
Tom is the co-anchor of Channel 4 news and we even see a Channel 4 news trophy on his bedroom dresser, yet in the next scene he's anchoring with the same co-host on Channel 9 news.
When the TV reporter first appears, about five minutes in, he's called "Niles Lawson", but when he appears the second time, he's called "Niles Laughton".