YOU SAID:

i dont know you guys that hammer thing is pretty funny

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ハンマーの事がかなり面白いと君たちを知らない

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I don't know you guys that the hammer is pretty interesting

INTO JAPANESE

ハンマーがかなり面白いとは知らない

BACK INTO ENGLISH

I don't know that the hammer is pretty interesting

INTO JAPANESE

ハンマーがかなり面白いのかわかりません

BACK INTO ENGLISH

I don't know if the hammer is pretty interesting

INTO JAPANESE

ハンマーがかなり面白いかどうかはわかりません

BACK INTO ENGLISH

I don't know if the hammer is pretty interesting