Think about it, just one $20 session buys them fresh makeup, a trip to the dry cleaners, and a burger. While expensive, if you don't pay, then they'll be reduced to worn makeup, dirty clothes, and Ramen noodles. While good at first, those noodles get old fast. You don't want the poor hookers to get bored of their noodles, do you? And why not throw in an extra ten so she can buy herself some new tooth paste, eh? She probably used it all up after the last guy. And be courteous. Don't make her do all the work. Show her a little love too. And come back the next day. But only in Vegas, where it's legal.
In other words:
Tip your hooker, save a life...Oh and your waitress as well. Especially if said waitress is also a hooker, than you pay her double.
(http://i55.tinypic.com/2u7rlht.gif)
Oh yes.