Good Riddles

Question: Four cars come to a four way stop, all coming from a different direction. They can't decide who got there first, so they all go forward at the same time. They do not crash into each other, but all four cars go. How is this possible?

Question: How many people do you need to have the odds be in favor (at least 50% chance) of two people having the same birthday?

Question: 2 men catch 2 fish in 2 minutes. At this rate, how many men could catch 500 fish in 500 minutes?

Question: I can be thin but not fat, In your body but never on your placemat.I'm always better when I'm fresh,but you'll never see me in the flesh.What am I?

Question: What word doesn't belong in this group? That, hat, what, mat, cat, sat, pat, or chat?