Why did a man tell his wife he had buried guns in their garden when he knew he had not?
Well, this guy was too lazy or a bit tired to dig his garden for planting his potatoes.
Knowing that women cannot keep their tongues, he told her that he had buried guns in the garden.
Next day at dawn, cops from the DHS come in and spent three hours digging the garden, to no avail.
Then the guy said: Now I can plant my potatoes...