Answer:
Hard to catch, easy to hold. Can't be seen, unless it's cold
It is the electronic version of junk mail or a salty meat in a can.
It is the assumed nocturnal symbol of Mr. Wayne. What is it?
Put into a pit, locked beneath a grate, guarded through the night, yet it still goes out.
It can cause deflation of tires when dropped from the rear of spy cars.
What language does a billboard speak?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?