Either there's a sign on the Colorado border with incorrect spelling or a prop contains incorrect spelling. As they cross from Wyoming into Colorado, they pass a sign which reads:
WELCOME TO COLORADO
"NOTHING WITHOUT THE DIETY"
The 'i' and 'e' in the final word are misplaced. The correct spelling is DEITY.
When Butchie's (Sam) sister gives him a wedgie and he turns around you can see the battery pack for his microphone.