Brain treezers!

Here are some naughty and cheeky puzzles....actually it's questions which makes you think a lot.
I have 3 questions,and I solved 2 of them.The last I don't know what is it.Anybody help me!

• There are 20 people in an empty,square room.Each person has full sight of the entire room and everyone in it without turning his head or body,or moving in any way (other than the eyes).Where can you place an apple so that all but one person can see it?

*ANSWER: Put an apple on your head.

• A man has to get a fox,a chicken and a sack of corn across a river.He has rowboat,and it can only carry him and one other thing.If the fox and the chicken are left together,the fox will eat the chicken.If the chicken and the corn is left together, the chicken will eat the corn.How does the man do it?.

*ANSWER: First of all,the man will get to another shore of the river by carrying with the chicken and the leave it there,in another shore of the river.Then,he will come back to the first shore and then bring with him a sack of corn.When he get to the another side of the river,he will simultaneously pick up the chicken and put a sack of corn there.After that,he will bring the chicken with him to come back to the first shore of the river and pick up the fox and also leave the chicken there,the first side of the river.So that he brings a fox and a sack of corn to the another side of the river already.At last,he just has to come back to bring the chicken and then get to the another shore of the river.So all 3 of it are passes the river.

• And the last one which I don't know:

You're walking through a field and find something to eat.It doesn't have bones and it doesn't have meat.You pick it up and put it into your pocket.You take it home and put it on a shelf,but 3 days later it walks away....What is it???
Need help please.....

Don't need more help.....The answer is an EGG.....I was thinking about it for a long time but still can't get it.And thanks to an invisible person...or...Whatever!....HAhahahahaha...I got the answers!!!!=))

And ye Mr.Chris...I think that you used that Yahoo! program on the top left hand side already ye???....=))