I've never used an icebreaker on anyone. I'm not sure I've I'm generally interested in talking to/getting to know strangers. And when I am (say it's a cute girl), I'm too shy and socially awkward to do so. ONE time I saw this guy I thought I'd probably want to know, in the psychiatric ward, and I asked him if he's a programmer and said to him he looks like a programmer. He wasn't a programmer, but we became friends.