YOU SAID:
when boys get sexual excitement
INTO JAPANESE
男の子が性的興奮を得るとき
BACK INTO ENGLISH
When a boy gets sexually aroused
INTO JAPANESE
男の子が性的に興奮したとき
BACK INTO ENGLISH
When a boy is sexually aroused
INTO JAPANESE
男の子が性的に興奮したとき
BACK INTO ENGLISH
When a boy is sexually aroused
That didn't even make that much sense in English.