New riddles

Dave is put in a cell with a dirt floor and only one window. The window is too high for him to reach. The only thing in the cell is a shovel. He won't be able to get any food or water and only has two days to escape or he'll die. Dave can't dig a tunnel because it will take him much longer than two days to do it. How will Dave escape from the cell?

What is black when you buy it, red when you use it, and gray when you throw it away?

How do trees access the internet?

What starts with a 't' ends with a 't' and is full of 't' ?

If A is for Apple and B is for banana what is C for?

What do u call a flawless bank robbery with no fingerprints left behind?

Before Mt. Everest was discovered, what was the highest mountain in the world?

I know a word which reads the same when written forward, backward or upside down. Do you?

James ordered a fishing rod, priced at $3.56. Unfortunately, James is an Eskimo who lives in a very remote part of Greenland and the import rules there forbid any package longer than 4 feet to be imported. The fishing rod was 4 feet and 1 inch, just a little too long, so how can the fishing rod be mailed to James without breaking the rules? Ideally James would like the fishing rod to arrive in one piece!

What is at the end of a rainbow?