An artist tried to concentrate on his work, but the attraction he felt for his model finally became irresistible. He threw down his palette, took her in his arms and kissed her.

She pushed him away.

"Maybe your other models let you kiss them," she said:

"But I'm not that kind!"

"Actually, I've never tried to kiss a model before," he protested.

"Really?" she said, softening: "Well, how many models have there been?"

"Four, so far," he replied:

"A jug, two apples and a vase."