Miss. Code Ann. § 15-1-59: Miss. Code Ann. § 15-1-59

If any person entitled to bring any of the personal actions mentioned shall, at the time at which the cause of action accrued, be under the disability of infancy or unsoundness of mind, he may bring the actions within the times in this chapter respectively limited, after his disability shall be removed as provided by law. However, the saving in favor of persons under disability of unsoundness of mind shall never extend longer than twenty-one (21) years.