Despite Nelson saying otherwise, Mr Lasson isn't the first person to call him Smelson. He was to be named as such on a MAD magazine in episode 262 'New Kids on the Blecch'.
In Marge's vision when she drinks the "tea," the coyote from the earlier Simpsons episode The Mysterious Voyage of Our Homer (1997) appears.
The title is a reference to the film "Dazed and Confused".
It is incorrectly regarded as a goof that the children are going to school even though Labor Day is a week away. It is common in many northern school districts to go back to school two weeks before Labor Day, so it is completely possible.
Blazing Guy is a parody of Burning Man one of the attendees even refers to the event by its real name before quickly correcting it.