I tell them I just ripped one back at my house and ask them if they want to smell it! Just joking.
Seriously, I think have a fun activity for them to do is the best. Think of it this way...what could a ugly girl say or have that would make you want to go back to her place (besides lots of money)? I think a cool one is asking them if they have ever smoked hookah ( a lot of people have but a lot of people haven't). Tell her you just bought a 8 foot tall hookah and want someone to smoke it with. She might just come over to check out the hookah.
Now if you want to buy a 8 foot tall hookah or not is up to you. I would cause it will make things flow a lot easier. Plus it would be freaking awesome!