Why did this British guy make fun of me?

I see your question has gained anti-British comments, which is unfortunate. I hope this person doesn't stain your view of all us British. Ignore his anti-American ignorance, anti-(Country) for whatever reason they feel suitable can be found in all countries. I for one, embrace my American counterparts from across the pond with open arms, but judge the person for the person, not an entire nation by the select few.