What cultural faux pas should I try to avoid making in New Jersey?

We asked people in New Jersey if they could share any humorous cultural blunders they commited. For new expats, keep in mind that these incidents are an inevitable part of expat life. Learning to laugh about them is the key!...

Other Questions:

•  What should I pack when moving to New Jersey?
•  Where should I setup a bank account in New Jersey?
•  Will I be able to find a job in New Jersey?
•  What is life like in New Jersey?
•  What do expats in New Jersey appreciate most about the local culture?
•  What do expats find most challenging?
•  Is there a lot of crime in New Jersey?
•  Is there a lot of diversity? Are people in New Jersey accepting of differences?
•  What are the schools in New Jersey like?
•  What are healthcare services like in New Jersey?
•  What are medical services in New Jersey like?
•  Are healthcare and health insurance expensive in New Jersey?
•  What are emergency services like in New Jersey?
•  Will I need to travel to see a specialist?
•  Are common prescription medications available in New Jersey?
•  How are local medical facilities in New Jersey?
•  As a foreigner living in New Jersey, will I have access to public healthcare? What is it like?
•  What have your experiences during the pandemic with the local healthcare system been like?