To be honest I haven’t heard or used pick up lines – probably because I don’t mix with people who use pick up lines. To explain that, I simply don’t go to places where you hear a lot of pick up lines – not that I have anything against people that use pick up lines I must add. My way of life generally keeps me clear of that scene.
I did however hear someone try to pick up a girl by asking her is she was out with her father (me). It didn’t work and it was seen through quite easily.