When I was a resident, I had a med student named Gloria who had this thing she did where she tried to guess where people were from. I saw her do it no less than three times per day. She did it to everyone and they LOVED it, especially when she was right.
Medicine Attending: "Hi, I'm Dr. K."
Gloria: "Is that Israeli?"
Attending: "Why, yes it is!"
Me: "So, um, my patient's lungs are drowning... how much--"
Gloria: "You know, I went to Israel last year."
Attending: "Really? Will you marry me?"
I remember one day an intern came by from surgery. He was totally adorable and nice in a way that only an intern in his first week of residency could possibly be. And he had this thick Southern drawl.
Gloria: "Are you from Georgia?"
Intern: [drawls] "No, I'm from North Carolina."
Gloria: [disappointed] "Oh."
Intern: [drawls] "Georgia is the deep South. If I went to Georgia, they wouldn't even think I had a Southern accent. They'd be like, 'Are you from Connecticut?'"
For some reason, I thought that was hilarious.
Then when we were talking to some therapists, Gloria randomly says to one of them, "Are you an Aries?"
Therapist: [surprised] "Yes, I am!"
Gloria said that this therapist reminded her of all the Aries she knew. She told me she wouldn't date Pisces anymore because her ex-husband was a Pisces. Then I had to pretend like I didn't think that astrology is the dumbest thing in the universe. I'm a Leo though and we're skeptics. (Actually, I just made that up.)