"Could you give me something to wear then?" you ask.
The shopkeeper smirks. "I don't believe we have anything to accomodate your...endowment. I would suggest, however, that you try another potion that could make yourself more manageable."
With that, she reaches from behind the counter and hands you a clear bottle filled with clear liquid.
"Here, take this." she commands.
While you feel hesitant to see your enormous penis and balls go away, you understand you can't leave in your current state. You open the bottle and drink the contents. After drinking the potion, you glance down just in time to feel a tingling sensation. You watch in awe as your balls begin slowly deflating and your penis begins shrinking. After a minute or so, your balls have deflated to the size of tangerines and your penis is at a respectable 8" soft.
"I guess it's better. I wish I could have played around with my size some more."
"Here, have four more potions. Two are the growth potions and the others are the counter potion. Take them when you feel the need."
After handing you the two potions, she also hands you a pair of briefs and jeans.
"This should do it." she says.
You put the briefs on to feel how they fit. Your package still looks huge but at least you have clothes now. You quickly put on the jeans, thank the shopkeeper, and leave the store.