A guy had a major argument with his girlfriend. He was in the wrong, but not enough to back down without an argument. So after storming away, and cooling off, the guy had a think. He was clearly in the wrong and felt pretty guilty, with all the trauma it had caused.
So to make it up to his girlfriend, he said he'd buy her a gift. "Any thing at all, my love", the guy said, overcome with remorse.
"Oh, I don't know", she replied, "You really shouldn't do this you know. But, if you are, just get me something really expensive, that I don't need."
The following day he booked her in for chemotherapy.