YOU SAID:

I am as bored as I could possibly be

INTO JAPANESE

私はことができる退屈

BACK INTO ENGLISH

I can be bored

INTO JAPANESE

私は退屈することができます。

BACK INTO ENGLISH

I have to get bored.

INTO JAPANESE

私は退屈する必要があります。

BACK INTO ENGLISH

I'm bored.

INTO JAPANESE

退屈してきた

BACK INTO ENGLISH

I'm bored.