I guess guys out there shouldn't used pick up lines, unless you could pull it off and be funny about it if not just don't used pick up lines! (damn disgusting). Fun fact (Do you all know why pick up lines is created? Because some guys does not have the talents to interest a women)
Here are some worst pick up lines could ever used :
1. Your dad must be a terrorist because he made a bomb.
2. Excuse me, can you give me directions...
3. Can I buy you a drink or do you just want the money?
4. Can I have your phone number? I seem to have lost mine.
5. Do you believe in love at first sight or should I walk past again?
Well at least pickup with class not crass. In my opinion, i feel like that it's kinda of cute but at the same time i will feel that did you said those "pickup lines" to other girls as well cause definitely you are a player (at all times) and wasting your time as well.
To solve this problem and to approach someone in the public is "let your guard down at least a bit, make it clear that you are aware of those clinched approach, i guess girls will think that you are cool enough to carry on a conversation" hope this work , till then!