Good Riddles

 
What am I? (medium)

Question: My memory is good, nay, more like perfect Yet I only remember two things.

President Fun (medium)

Question: The 22nd and 24th Presidents had the same biological mother and father, but weren't brothers. They were both male, and were never female. Neither were adopted or "switched at birth". How is this possible?

Riddle #966 (medium)

Question: Mr. Niceguy donated one million dollars to help feed starving people. After he donated the money he was a millionaire.

How did he become a millionaire?

Question: I'm measured in temperature and time, but have neither.

What am I?

Riddle #2038 (medium)

Question: She lay on her soft bed. She has envy toward us. Why?