Good Riddles

Question: A person has one lion, one lamb and a bundle of grass. He wants to cross a river but there is only one boat and it can't sustain the weight of more than two articles at time. Also, he has to make sure that the lion doesn't eat the lamb and the lamb doesn't eat the grass. How will he get to the other side of the river with all three intact?

Question: I have a few points but we're not competing.
And I'll help you win when you're eating.

What am I?

Question: What is brown or silver, has a head and tail but no arms or legs?

Question: Four hikers are forced into a cabin with no lights by a bad storm. On the door of the cabin is a sign that reads, "Come in as you please, but fall asleep and you will die." Being very superstitious, they all take this very seriously and devise a plan so they can all stay awake. They all stand in a corner and one person walks from one corner along the wall to the next and taps the person in that corner making sure they are awake. They do this for many hours until one hiker suddenly runs out of the cabin screaming along with all of the others.Why did they run out terrified?

Question: A man is stuck on an island with his best friend and a fisherman. The fisherman and his best friend go off to catch food while he builds a hut. The fisherman returns alone with some salmon he had prepared. His best friend had fallen off a cliff.

After he is rescued from the man goes to a diner and he orders salmon. He eats his meal, he pulls out a gun and commits suicide. Why does he do this?