YOU SAID:

the child who was sitting on the chair got smacked in his noggin

INTO JAPANESE

椅子に座っていた子供がノギンに叩かれました

BACK INTO ENGLISH

A child sitting in a chair was hit by a nogin

INTO JAPANESE

椅子に座っている子供がノギンに襲われた

BACK INTO ENGLISH

A child sitting in a chair was attacked by Nogin

INTO JAPANESE

椅子に座っている子供がノギンに襲われた

BACK INTO ENGLISH

A child sitting in a chair was attacked by Nogin