Bite the Hand That Feeds You

To act badly toward someone who has helped you

Brain Teaser

A problem or puzzle that is difficult to solve

Don't Judge a Book by Its Cover

Do not judge something by its appearance alone

Ball Is in Your Court

It is your turn to take action or make a decision

Catch Someone with Their Pants Down

To discover someone in an embarrassing situation

Long Story Short

Used to indicate that you are giving a brief summary