Thanks for your query.
First of all remember that the scrotum does not become saggy due to masturbation.
The causes are:
Hot and humid temperature
Idiopathic (no specific reason).
Cold water bath
loose outer clothes
See a Doctor if this does not help.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.