What the boss paid was that the cost of a shirt was 18 yuan, and he gave it to the customer 79 yuan. Compensation to neighbors 100 yuan.

The boss got 100 yuan from his neighbor. A counterfeit note of 100 yuan.

100- 100- 18-79=-97

The answer is that the boss lost 97 yuan, and the boss took a counterfeit money, sulking and teaching a hundred times!