It's probably been posted here before....
An old farmer with a 5-gallon bucket walked to one of his isolated farm ponds to find two young ladies skinny dipping in it.
One young lady yelled at him, "You might as well go on home because we're not coming out of the water until you leave."
The farmer yelled back, "Oh that's all right... I won't be here long." Hold up the bucket, he said, "I'm leaving right after I feed the alligator."