Joe Arridy had an IQ of 46 and was described as the “happiest prisoner on death row”. He was known for spending his time on death row playing with a toy train, given to him by prison warden Roy Best. For his last meal, he requested ice cream. He went into the gas chamber with a smile . Arridy was officially pardoned in 2011 (72 years after his execution) as evidence proved he was coerced into confession.