"Come back to hunt you"
Something that resurfaces as a problem or challenge. ex: All that homework I didn't turn in came back to haunt me when report cards came out.
"Scared the pants off me"
To be really scared. ex: the clown in the haunted house really scared the pants off me.
"Dead tired"
Exhausted, very tired. ex: All of my teachers look dead tired.
"Skeleton in the closet"
To have a secret. ex: Jim has a skeleton in his closet.
"Cold blooded"
Evil. ex: it was a clod blooded crime.
"Scaredy pants"
Scared easily. ex: My sister is a scaredy pants when it comes to haunted houses.
"Over my dead body"
Something that will never happen. ex: My student asked if she could drive my car and I said "over my dead body"
"Out for blood"
Very competitive or determined. ex: The defending champs were out for blood this season.
"Pale as a ghost"
Very white looking, lost color. ex: I looked pale as a ghost when I got my flu shot.
"A ghost town"
A place that is abandoned or empty. ex: the mall was a ghost town when I got off work at midnight.
"Makes my blood boil"
Something that makes you very angry. ex: bullies make my blood boil.