Bad Apple at the Hot Corner
Bad Apple:
Someone who is not wholesome, honest, or trustworthy.
Somebody thought to be a bad influence on others.
A discontented, troublemaking, or dishonest person: In any group of average citizens there are bound to be a few bad apples.
one bad person in a group of people who are good. You'll find the occasional rotten apple in every organization.
Hot Corner:
The "hot corner" in Baseball refers to the third base position. Since most batters are right handed, when they pull the ball down the third base line, they are hitting it in their power zone. Since the base is 90 feet away, the third baseman is required to have the best reflexes. So if you are playing the "hot corner" the ball blazes by you at a high speed and you must be able to react quickly to make the play.