A company director was looking for a really really really good computer programmer to make the ultimate app for him. A programmer was recommended — "and he's so good that his hands are actually golden".
He arranged to meet the programmer, who was wearing fine black leather gloves. He tried every way he could to get the programmer to take off the gloves, and finally asked him "I've heard you have 'golden hands' — is that really true?"
"Sure," the programmer said and stripped off a glove.
The director looked closely. It seemed like a perfectly ordinary human-coloured hand to him. "It doesn't look gold to me," he said.
"Ah," said the programmer. "No one who's a cuckold can see the gold."