Chatterbox: Down to Earth

Riddle game!

I think this game has been played on the CB before. Here are the rules.

The first person posts a riddle, then the other CBers try to guess it. The first person to guess correctly posts their own riddle, and the game continues. If the riddle has not been guessed after one day, please feel free to post a new one and the owner of the un-guessed riddle can post the answer. Here is the first riddle, its pretty easy to start off with.

If I drink, I die.

If I eat, I grow.

What am I?

Oh, while we're on the subject, answer these three questions without thinking about them too much.

What does a cow drink?

What do you put in a toaster?

How many months are in a week? 

Now read them again. Did you answer differently the first time? If not, well done! If you answered milk, toast and seven, don't worry, it's a completely normal response. Maybe think a bit harder next time! How did you go?