Why am I suddenly reading minds?

I know this is ridiculous. But lately I've been hearing what people are thinking. Sort of. I'll be sitting in a room with someone busy doing something and I'll hear them (out loud, I think...) say something like "I want ice tea". So I say "I'll get it" and they have no idea what I'm talking about. The other day while at lunch with my friend Jess, reading the menu and Taylor Swift came on. She said "OH, IT'S OUR SONG!" which i thought was strange, since Jess and I don't HAVE a song..that would be weird. She said it again, and I looked up and said "This isn't our song, weirdo!" and she was confused. "I didn't say anything. I was reading about the Mac 'n Cheese...this was my song with my ex boyfriend though. I was just thinking that". It's been happening daily. It's so weird...and I want to know how to control it. How can I use it to my advantage. And how can I turn it off to avoid more awkward "mind reading" moments...