Medication

How many adverts do you see on dodgy websites for "Penis enchantment!" or "better Viagra!"? Well what if someone was gullible enough to order that very dodgy deal and find out it had quite the opposite effect!

But if you wish for a more legal way maybe a cocky guy has to take some pills for a condition but the clumsy doctor "accidently" orders something that has terrible size effects for his manhood? So many possibilities...