Humphrey Bogart had a way with life’s little vices. When he bought you a drink, the critic Kenneth Tynan recalled, he wouldn’t just pass it across — “he’d take me by the wrist and screw the glass into my hand as if it was a lamp socket.” Bogart’s manner with a cigarette was so vivid that his surname became an admonishing hippie-era verb: “Don’t bogart that joint.”

I’ve tried repeatedly, over the course of my life, to become a druggie. It’s never taken. But even I know what it means to bogart something: to hoard it, to refuse to share. It wasn’t until I read Lizzie Post’s helpful and inquisitive new book, “Higher Etiquette: A Guide to the World of Cannabis, From Dispensaries to Dinner Parties,” however, that I fully understood the term’s provenance.

“Bogarting is a term derived from the way Humphrey Bogart would just let a cigarette hang out of his mouth, not seeming to actually smoke it,” Post writes. “Bogarting a joint is when you are holding on to it or wasting it by letting it burn down without being hit.” In other words: Pass the dutchie, Bogie, on the left-hand side.

Post is the great-great-granddaughter of the American etiquette doyenne Emily Post. Born in 1982, Lizzie is the author or co-author of several previous books about manners, and co-president of the Emily Post Institute in Burlington, Vt. The first question she asks, in the preface to “Higher Etiquette,” is: “What would Emily Post think of this book?” She decides her ancestor would have nodded her assent, if not with a lopsided grin.