Answer:
I am black when you buy me red when you use me when I turn white you know itβs time to throw me away.
I am a piece of paper that takes most people 3 or 4 years to get. What am I?
No matter how hard you hit me, no matter how much I hurt, I'll always go for a laugh. What am I?
I am just two and two. I am hot. I am cold. I am the parent of numbers that cannot be told. I am a gift beyond measure, a matter of course. What am I?
What can be cracked before it's used?
The answer I give is yes, but what I mean is no. What was the question?