A retired older couple return to a Mercedes dealership

 A retired older couple return to a Mercedes dealership where the salesman has just sold the car they were interested in to a beautiful, leggy, busty blonde in a mini skirt and a halter.
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The old man was visibly upset. He spoke to the salesman sharply.
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"Young man, I thought you said you would hold that car till we raised the $55,000 asking price," said the older man.
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"Yet I just heard you closed the deal for $30,000 to the lovely young lady there."
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"And if I remember right, you had insisted there was no way you could discount this model."
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The salesman took a deep breath, cleared his throat and reached for a large glass of water.
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"Well, what can I tell you? She had the cash ready, didn't need any financing help, and, Sir, just look at her, how could I resist?"
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Replied the grinning salesman a wee bit sheepishly...
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Just then the young woman approached the senior couple and gave the car keys to the old man...
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"There you go, dad" she said. "I told you, I could get that idiot to lower the price".