YOU SAID:

He's not easy to reason with, (He's a bully) He's no rocket scientist, (He's a bully) He's slow and illogical,

INTO JAPANESE

彼は推論するのが簡単ではありません、（彼はいじめっ子です）彼はロケット科学者ではありません、（彼はいじめっ子です）彼は遅くて非論理的です、

BACK INTO ENGLISH

He's not easy to reason, (he's a bully) he's not a rocket scientist, (he's a bully) he's slow and illogical,

INTO JAPANESE

彼は推論するのは簡単ではありません、（彼はいじめっ子です）彼はロケット科学者ではありません、（彼はいじめっ子です）彼は遅くて非論理的です、

BACK INTO ENGLISH

He's not easy to reason, (he's a bully) he's not a rocket scientist, (he's a bully) he's slow and illogical,