They say that Arthur Swenson had an eye transplant and that it is the reason for his two different colored eyes. There is currently no such thing as an eye transplant. Only corneal transplants are possible at this time. The cornea is the transparent layer on the surface of the eyeball. The patient's own iris (the colored part of the eye) remains in place.
When Sam and Dean discover Brick Holmes' secret trophy room Sam claims Brick must have been some sort of super fan of all these athletic achievements and then goes on to call a Cricket Bat a Cricket "Mallet" which is as ridiculous as calling a Baseball Bat a Baseball "Mallet"...
Mallets are used in the games of Polo (Played on horseback) or Croquet but not Cricket...
Mallets are used in the games of Polo (Played on horseback) or Croquet but not Cricket...
The translation app (from 2012 at the latest) somehow picks up the chant perfectly, despite the speed at which Swenson is saying it, the fact that it is being played from a speaker into a phone, and the fact that even in 2017 speech-to-text apps on a smartphone are known for making mistakes.
When Dean and Sam are in the room full of sporting memorabilia, Sam refers to a cricket bat as a "cricket mallet". In countries that play cricket professionally, it is referred to as a cricket bat.