A most delicious thing.
It can be given but cannot be kept.
Some awake from it after they've slept.
It is the moistest and softest butterfly wing,
But when it is the last even it can sting.
Answer: Kiss.
This riddle appears in the following downloadable PDF files:
Can you solve one of the most famous logic puzzle ever?
Memory Matching game for kids, adults and seniors.
Connect the matching tiles and pop them all.