Once, after seeing the Pink Panther movie that day, my grandma and I went to the grocery store to buy hamburgers. We were running around going "de amburguer! De amburguer!" and an Asian woman that worked there, who had a slight accent, asked what language we were speaking. That was almost eight years ago and we still laugh about it.
It's not one of those codes. But to mix up the word, you start with the last letter, then the first letter, then the second to last letter, and back and forth like that until you get to the middle of the word.