Heres a good one.
You drive up to them, you roll down your window and tune down your 50 cent music.
Than you drop the word.. but make sure you keep a serious face, like you are talking to a police officer.."Girls can you help me with some directions".."Yea sure".."Im a little bit confused, Maybe you can help me.. Looks like I took the wrong turn, how exactly do I get to your house?".. KEEP IT SERIOUS THE WHOLE TIME
They will usualy either crack up or blow you immediately. If they do blow you off, just move on to the first one you see

this could either be the coolest thing in the world or the creepiest gotta watch with this one thanks for sharing it.