(idea submitted by Darren M.)
The perception that Jews are good with money and financial matters has been around for many decades, and yes, there are many more Jews working in the world of finance than in Coal Mining. The reality is that not all Jews are as fiscally acute as the stereotype, especially the younger generation. Therefore, for Jewish Young Adults of today, the perception of being good with money is much stronger than the truth, and hence Jewish Young Adults have adopted the bizarre practice of pretending to know more about economic issues than they actually do.
It is unclear why JYAs would undertake this minor fib, but the instances are readily perceptible to any discriminating observer. For example, female JYA “Shayna” was recently overheard bragging to one of her multiple best friends that “My boyfriend is totally smart. He only invests in government bonds cause they are high yield”. Even though her friend nodded approvingly, minimal research would show that government bonds are actually low yield, commensurate with their extremely low risk.
Another example is JYA “Randy” who mentioned to his coworker at Tenjune “I’m totally going to short Ford”. While this act seems like an impressive move, even a casual observer would note that Randy’s decision is about four years too late, and shorting the stock now, simply because the car industry is in the news in recent months, may suffer from “too little too late”.
As a third example, in light of the recent economic situation in America, many JYAs have been heard stating “I totally saw it coming” in various social situations. While plausible, this claim is highly improbable, as even most pedigreed academics in the field were caught off guard.
Typically if you call out a JYA about their supposed financial industry credibility, they will either offer you unsubstantiated anecdotal evidence in support of their claims, or they will immediately backtrack and reverse their initial argument. Therefore, in order to avoid awkward situations, and to save the JYA from humiliation, it is advised to nod and smile along and ask a friendly Mormon for their advice.

JYAs are usually exposed to the world of Hebraic Rap either at a Birthright Mega Event (or any similar event commemorating a trip to Israel), or at a local Israel Day celebration. The bands are brought to such events specifically to gain the interest of JYAs, especially unaffiliated JYAs who would otherwise avoid such events. Ironically, JYAs find themselves, at least temporarily, avid fans of these groups, even though they have no idea what they are singing about.
Jewish Young Adults of today tend to be highly conscientious consumers, be it in knowing exactly what they want, knowing exactly where to find it, or knowing exactly how much an item is worth. While everybody likes to get a good deal now and again, scoring a pricey item for a fair value, JYAs have a keen subconscious understanding of nebulous economic concepts like price elasticity and utility, making them prone to bragging about bargains.