Sometimes pass known locations driving or walking and see lads on the phone or texting. The key thing is to make it all look natural. Don't shout just normal calm voice. This is easy to say I know but they say that practice makes perfect
If you happen to meet somebody in the hall or the lift just say hello and talk about the weather. Meet a lady in a hallway last year and we had a great conversation.
Sometimes people get too worried or stressed about what other people think. They have far more important things to them on their minds than thinking that you are a possible client for an escort.