This is a long, flexible rod with a little flat smacky-thing on the end, designed to make horses go faster. It's also called a "quirt," usually by people who enjoy silly-sounding words. Since you don't (presumably) own a horse, what were you planning on smacking with this? Wink wink, nudge nudge. If it were sticking out of your haversack, people might construe it as an open invitation. And people might ask you what the heck a haversack is.