Bit of a country boy here. Worked on the farms as a youth and depending on where you are, yes most of what has been said is true.
However, not all country boys like beer, and some of them are a bit closed minded in terms of sexual options... ie,
Me: So, what did you do last night?
Him: I fooled around with Betsy Sue (not her real name

)
Me: Oh yah? How was it?
Him: Not bad, she's really hot.
Me: Did you fuck her doggydown? ( slang in my group for doggystyle with the woman's ass in the air. Kinda looks like a pyramid. It was very popular in highschool)
Him: Nah, I don't do that stuff. She was on her back and we did it missionary style.
Me: oh yah? Did she enjoy that?
Him: Dunno, I was on there 5 minutes.
Was he joking? Probably... but still most of the country boys I know aren't keen on the whole multiple positions etc.