Here's why:
* Pig Latin rules: Pig Latin typically involves moving the first consonant of a word to the end and adding "ay". If a word starts with a vowel, you add "way" to the end.
* "Hoessay" doesn't follow these rules: There's no English word that, when translated into Pig Latin, would result in "hoessay."
It's possible that "hoessay" is a misspelling or a made-up word.