What are five ways to take drugs?

A drug can be smoked, swallowed, snorted, injected, or absorbed through the skin. Although there are very few drugs that can be absorbed through the skin. The only one that I know of is LSD.

Not all drugs can be taken the four other ways, either (smoking, swallowing, snorting, injecting). For example, regular cocaine can be snorted or injected, but crack cocaine can neither be snorted nor injected. Crack cocaine can only be smoked or swallowed.

I have also heard that cocaine (and maybe other drugs, too) can be taken by inserting them into your vagina, but I have no idea how that works.