An "enhancing drug" that I would love to have

I, and I expect everybody else, get lots offers every day for drugs which will enhance either my penis (most common) or breast (no thank you!) size. But what I would really need is a drug that enhances my ability to put in zippers; so that they always look right on the first try. This far I have only discovered drugs which make it more fun (or at least less boring) to put in zippers, but unfortunately they all have the negative side effect that your have a higher risk of turning out crooked.