What to say to Panhandlers

[RPM]

I am in a mid-sized city with a major problem with panhandlers (how they got to be worse than NYC, I will never understand). They are pretty aggresive and I have really begun to dislike them.

I dont believe in rewarding one for shaking a cup - playing a trumpet or singing on the other hand will get me to give quite quickly. What should I say when they stick the cup in my face.

I usually say nothing.
Today I screamed "NOOO!!!" at him.

In a perfect world, I would respond with "you want change, the guy on the last corner had a whole cup-full, you should see him!"

What should i say to these clowns?