Why shouldn't you tell a secret on a farm?
Because the potatoes have eyes, the corn has ears, and the beans stalk.
A three-fer:
What do you get when you cross a former vice president with a slasher film?
A: An Al Gore-fest!
What do you get when you cross a former "90210" actress with a national youth contest?
A: A Tori Spelling-Bee!
What do you get when you cross a presidential candidate with a wind instrument?
A: A Donald Trump-pet!