The two main rules of the company..

A boss was telling an applicant the two main rules of the company

He said, "Our 2nd main rule is cleanliness.
Did you wipe your feet on the mat before coming in?"

The applicant replied, "Yes sir! I did."

Then the boss said,
"Our 1st main rule is trustworthiness.
.
.
.
There was no mat!" :-P