Fun Riddles

Question: What occurs once in a minute, twice in a moment and never in one thousand years?

Question: I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter.

What am I?

Question: A claustrophobic person gets on a train. The train enters a tunnel just as it is leaving the station.

Where is the best place for him to sit?

Question: What was the president of the United State's name in 1980?

Question: What always eats but is always hungry?