Is it normal my straight male friend says he would turn gay for

My straight guy friend said he'd turn gay for someone who is English or Irish.

Is this normal? Does that make him bi?

He's a single guy but he once dated me when we were in high school. We're in our twenties now and he's just my good friend and I'm with someone now and we're fine being friends. He only dated women..he only ever talks about women and he flirts well with them and never flirts with men or showed/shows interest in men.

What does this mean? We were out to lunch at a coffee shop and when we were paying and walking to a seat with our drinks/snacks, he bumped into a guy who said, "sorry mate" and the guy put his hand on his shoulder. The guy had an English accent. When we sat down my friend said, "that's the only reason I'd ever turn gay". So when I asked him what for, he just told me "any guy with an accent like that, English or Irish with nice hair and style, there's just something about them."

Does this make him gay? This really confused me. He was dead serious too because I laughed and he said, "I'm serious, I don't know what it is but if I was working with an English or Irish guy right now at my job, I might just turn gay"

Like what?? IIN?