a king-sized headache的用法和样例：
- I want to buy a new bed, but this time a king size one.
- Our room is not very big, but it has a king size bed and a Fireplace(including firewood), we had a good dream that night.
- An emerald of that size, unflawed, would be worth a king's ransom.
- Do you have king size bed in a single room?
- That painting must be worth a king's ransom.
- She discarded a four, and picked up a king.