知らないふりをする事は簡単だ・・・
It would be easy to pretend I didn't know...

しかし・・・、この後
But... what about later?

オナニーってなに？
What's fapping?

バカ正直なお父さんに聞く事になったら・・・
If she asks my ridiculously straight-laced father...

はうあ！！
Hahh!!

父さんの心臓はショックで停止するじ事間違いない・・・
It would definitely shock his heart so much it'd stop beating...