Boke

When used as a noun, a boke is a personal stash of any drink. When used as a verb, boking describes drinking from such a stash. A boke can not be shared with more than one person, and a boke that is communally shared is no longer a boke. When sharing with your friends, typically out of courtesy or obligation, this is referred to as "bumping someone else's boke". Boke is not limited to alcoholic beverages, although it often refers to such.