harum-scarum
In a careless, disorderly or reckless way. Careless, wild, or disorderly in one's acts or performance; reckless.
Jim does his homework harum-scarum, and that is why his schoolwork is so poor.
Jack is such a harum-scarum boy that you can never depend on him to do anything right.
have a care
To be careful what you do.
Jane, have a care what you're doing with that valuable glass.
The judge told him to have a care what he said in court.
house of cards
Something badly put together and easily knocked down; a poorly founded plan, hope, or action.
John's business fell apart like a house of cards.
in the cards
on the cards
To be expected; likely to happen; foreseeable; predictable.
It was in the cards for the son to succeed his father as head of the business.
John finally decided that it wasn't in the cards for him to succeed with that company.
kiddie car
A school bus.
Watch out for that kiddie car coming up behind you!
lay one's cards on the table
lay down one's cards
put one's cards on the table
To let someone know your position and interest openly; deal honestly; act without trickery or secrets.
In talking about buying the property, Peterson laid his cards on the table about his plans for it.
Some of the graduates of the school were unfriendly toward the new superintendent, but he put his cards on the table and won their support.
magic carpet
A rug said to be able to transport a person through the air to any place he wishes.
The caliph of Baghdad flew on his magic carpet to Arabia.
Any form of transportation that is comfortable and easy enough to seem magical.
Flying the Concord from Dallas to London seemed like boarding the magic carpet.
Mr. Smith's new car drove so smoothly it seemed like a magic carpet.
make oneself scarce
To leave quickly; go away.
The boys made themselves scarce when they saw the principal coming to stop their noise.
A wise mouse makes himself scarce when a cat is nearby.