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

We asked people in Texas 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 do I need to know before moving to Texas?
•  How do I find a place to live in Texas?
•  What is a typical expat home or apartment like in Texas?
•  What is the average cost of housing in Texas?
•  Should I buy or rent a home in Texas?
•  What should I pack when moving to Texas?
•  What cultural faux pas should I try to avoid making in Texas?
•  Why do people move to Texas?
•  What are healthcare services like in Texas?
•  What are medical services in Texas like?
•  What are typical rents in Texas?
•  What appliances are typically included in a rental?