For Season 2 I've seen the following episode names in the wild, with almost no source to back up any of the names (including the currently used names):

The following episodes seem consistently named as such:

• El Bombadero
• Fatherland
• Slasher

But the following don't (probably censorship related):

• Choad Warrior / The Chode Warrior / Chode Warrior
• Ning Ping (Part 1, Part 2) / Bomb China (Part 1, Part 2)
• WTF / Battle of the Bay