You know you have the Apple Shits when you've eaten a lot of apples, around 2-3 a day, and every five minutes you have to shit, but its not the runs. Doesn't apply to everyone though.
An apple a day keeps the doctor away becuase I have the Apple Shits and I can't drive to the doctor without soiling my pants.
A general term used to describe the final result of a highly acidic diet that consists mostly of fruit. The elderly often suffer from apple shits (thinkgrapefruit and prunes) but anyone can become a victim.
A: "Hey granny, we totally tricked you!"
B: "Oh you youngerns, I got the apple shits..."