YOU SAID:
I think the young girl is dull as ditchwater
INTO JAPANESE
若い女の子は ditchwater として鈍いと思う
BACK INTO ENGLISH
I think young girls are dull as ditchwater
INTO JAPANESE
若い女の子は ditchwater として鈍いと思う
BACK INTO ENGLISH
I think young girls are dull as ditchwater
That didn't even make that much sense in English.