Where do Scam artists learn their trade?

Radar Anyone

The Highway patrolman said , son what are you up to?
Just holding up a sign sir, for everyone to view’

My God boy! it says Radar Speed trap up ahead
You can’t do that boy, It’s against the law, he said,

Why asked the boy, i just hold it up, a couple times a minute,
It keeps their driving slower and within the speeding limit,

But that’s our job ; the way we control their speed,
That’s OK Mister Officer , to thank us there’s no need,

The city put us outta business , couldn’t sell our lemonade.
But we just figured out a good way money could be made.

Boy how can you make money with our radar speeding blips
At the end of your Speed trap Officer, brother Bobby’s taking tips!