Hey, he got my anonymous tip!
It was either him or 60 Minutes or the local consumer champion.
Surprised, but not baffled by his presence.
Will he discover my shifty dealings ?
I would throw mocks at him.
Huh? Must be pausing on his way to the business down the road, or to ask directions.
Give my place of employment, must be there to load up on fast food/bad women/ice cold beer/drugs.
I'd ask him for a paying job.
I'd ask him for an autograph.
Other (please mention in comments)