This isn't really from MY job, but it is a stupid people story:

My dad's renovating our local drug store; replacing some tile, doing some painting, stuff like that.
One day, he's behind a counter with a paint roller in his hand, he's painting the counter. This guy comes up, leans up on the counter, and goes "Whatcha doing?"
There's a paint roller IN HIS HAND. He's like "I'm painting." The guy goes "Whatcha painting?"
He's ROLLING THE PAINT ONTO THE COUNTER. He's like "This counter."

-.-
People are stupid.