I thought you were American - The worst thing you can say to someone when they tell you th

The worst thing you can say to someone when they tell you they're into girls. It's like a punchline that nobody asked for.

My neighbor told me she's a lesbian. I said, 'I thought you were American.' She threw a chair at me.

My brother said he's bisexual. I said, 'I thought you were American.' He called me a fag.

My crush said she likes girls. I said, 'I thought you were American.' She said she liked me more now.