Friday joke, Virile old man Options

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An 85-year old man walks into a sperm bank and asks about making a donation. The receptionist looks at him and says, "Sir, surely you're too old."
He replies, "I may be old, but everything still works."
She proceeds to show him to a room and asks him to notify her when he is done. After an hour, thinking the worst, the receptionist goes and knocks on the door, "Sir, is everything all right?"
After a few seconds the old man opens the door, beads of perspiration on his forehead, "I've yanked on this thing, twisted it to the right, twisted it to the left, run it under hot water, even beat it up against the wall and I still can't get the lid off this damn cup!"