Squeegie

Every day, I drive to work on Culpepper Road.
And every day, the same homeless guy is standing there at the light.
He stands there with a squeegie and two buckets, offering to clean your windshield.
His cardboard sign says he’ll do it for free, God bless you, and the usual crap.
But he’s really expecting a buck. Or five.
If you give him money, he uses the bucket full of soapy water.
If you don’t give him money, he splashes the other bucket on your car.
What’s in the bucket?
Drive by there, don’t pay him, and find out.