30 years!...
A couple were celebrating their 30th wedding anniversary. For the entire time they had been married, the wife had kept a safe which the husband had never been allowed to look into.
He asked her if, since they had been married so long, he could see what she had been keeping all these years. She said OK and opened the safe. In it were a pile of money totalling £5,000 and three chicken eggs. He asked her, "What are the eggs doing in there?"
She said,"Well, I have to admit that I haven't been completely faithful to you. Whenever I strayed, I put an egg in the safe." He thought about it and said, "Well, I guess I can't be too upset about three eggs. But where did all the money come from?" She replied,
"Every time I got a dozen, I sold them."