Korean variants of "I am crazy"

• Na mee-chuh-suh
  
• Na, michin ya
  ( Pronounced: nah mee-cheen yah)
  Comment: To call someone "crazy" is equivalent to calling them "insane" in South Korea. It is considered a massive insult, to the degree of calling someone a "fucker" in English.
• Bal-Pun-E (pronounced pahl-poon-ee.)
  Comment: Another massive insult. Suggest that someone is mentally retarded.
• Ba-Bo
  (Pronounced bah-boh)
  Comment: equivalent to saying "dummy" or something cute like "chowder-head.". It is considered a large insult.