Answer:
Ambitious people will climb the social version of this contraption.
What can speak without a tongue and listen without ears?
One who has offended the government and has been detained by it
This type of corn swells up and bursts into a crisp puff when heated.
Even if you throw it away, it still comes back.
It can be cracked, It can be made, It can be told, it can be played. What is it?