Wealthy white boys from North America are more likely to be full of shit than other kids:

Having derived and established the comparability of our bullshit scale via measurement invariance procedures, we go on to find that young men are more likely to bullshit than young women, and that bullshitting is somewhat more prevalent amongst those from more advantaged socioeconomic backgrounds. Compared to other countries, young people in North America are found to be bigger bullshitters than young people in England, Australia and New Zealand, while those in Ireland and Scotland are the least likely to exaggerate their mathematical knowledge and abilities. Strong evidence also emerges that bullshitters also display overconfidence in their academic prowess and problem-solving skills, while also reporting higher levels of perseverance when faced with challenges and providing more socially desirable responses than more truthful groups.

Here’s the study: Bullshitters. Who Are They and What Do We Know about Their Lives?