A pick up line that has been said seriously, has not worked.
A pick up line that has been used, as a joke, not expecting a response, has. It's an easy way to break the ice, laugh and let the guy show me he has a good sense of humour. At least the cleaner pickup lines.
It's amazing what some losers out there will say. Simply amazing. My ex-boyfriend was after my friend for awhile and came up to her and said, "Give me your phone number, you know you want me"