If your goal is to pick up 18 year old girls, that base their decisions on intent rather than actions. Say you are a member of Greenpeace, the Sierra Club, and PETA. You never have to do anything and it only takes 20 bucks to be a member.
Girls eat that crap up. Much like saying I own my own business, I am a professional photographer, I am a DJ or I am in a band.
Now if you talk to a 30 year lady with these lines. You better be able to back it up.
Young girls are still naive. Older Women will bust your balls.