It is illegal to mispronounce the state name of Arkansas.

The Law

According to the state legislature, the only acceptable pronunciation ends with a silent 's' and an 'saw' sound. This was formally adopted in 1881 to settle a bitter dispute between two state senators over how to say the state's name. Saying 'Ar-Kansas' might not land you in jail today, but it remains a grievous offense to state pride.