....a bad penny always turns up

BAD PENNY -- The phrase usually is heard in this country (U.S.) as 'A bad penny always turns up,' meaning that a no-good person can be counted upon to come back again and again. The expression was originally English and the unit of currency referred to was the shilling.

“A bad penny always turns up” is a very old proverb that dates back to at least the mid-18th century and is probably much older. The general sense of the phrase is, as the Oxford English Dictionary puts it, “the predictable, and often unwanted, return of a disreputable or prodigal person after some absence, or (more generally) to the continual recurrence of someone or something.” A “bad penny” is a person whose presence is unwelcome on any occasion, but whom fate perversely employs to torment you by making said person appear (“turn up”) repeatedly, often at the worst possible times.

The nephew who appears only at family weddings, funerals and holiday dinners, never invited but always mysteriously materializing at your elbow and asking for a loan, is the classic “bad penny.” Former romantic flames can also be counted as “bad pennies” if fortune (or fanaticism) dictates too many accidental reunions (“Don’t stalk him! If you turn up like a bad penny every time he leaves the house, he’ll think you’re a bunny boiler,” Cosmo Girl, 2004). (“Bunny boiler,” of course, is a reference to the behavior of the character played by Glenn Close in the 1987 film “Fatal Attraction.”)

A “penny” to us here in the US is a coin worth one cent (from the Latin “centum,” one hundred), or 1/100th of a dollar. The origins of “penny” are uncertain, but it’s a very old word with relatives in many languages, and may have come from a root meaning “pledge.”

Pennies today are viewed as nearly worthless   by many people, but when the term “bad penny” first appeared in the 18th century, pennies were serious money. This made them ripe targets for counterfeiters, and to reach into your pocket or purse and discover that you had ended up with such a counterfeit coin, a “bad” penny, was a depressing and annoying experience.

The only recourse available if you were stuck with a “bad penny” was to try to spend it as quickly as possible and hope that an inattentive shopkeeper would take it. But because everyone was trying to unload their “bad pennies” this way, according to the common wisdom of the time, your odds of encountering one, or even the very same one you had gotten rid of a week earlier, were quite high. Thus “bad penny” became an idiom meaning “an unwanted thing that keeps showing up.”

Oh no, bad news for Pinocchio! I was 'yet again' awarded one of your precious client projects that I am sure you thought was 'yours to begin with.'

This time I took it away from the Barista Boy...guess you could call me your bad penny, eh? Thanks for the business. Your team's lack of closing skills has made this an excellent year for me...and for that I must take the time to say thank you.