Best Jokes and Riddles

#44

And the answer to the previous riddle is because his teacher had told him to go through it.

We all have waited behind a door to scare someone, then leaving because they are taking too long to come out.
Don't deny it!!!

And the riddle
I tell you about things, but I cannot talk. I make you see the world, but I cannot see.
Who am I?
Comment your answers.
Answer will be on next chapter.