2. (often cap. S) A museum dedicated to Simpson paraphenalia. From Simpson and Smithsonian, the institution that runs many of the museums in Washington, D.C.
2. After visiting the Flintstones Museum, the family went to the Simpsonian, where they saw original storyboards.
Dude 2) Family Guy!?! That show sucks! The Simpson's are sooooooo much better!
Dude 2) Dude, you're such a Simpsonian