If you are sure that the pimple over your manhood is not an STD as you have not been sexually active then it could just be a folliculitis or a carbuncle which gets pus filled and can be treated with an antibiotic cream over it for few days. Unless it is itchy and multiple in growth, then it would require a culture to identify the causative organism,
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.