What could happen?

Ok so me and my friend were messing around after school throwing stuff at each other ( bread pens pencils ect.) so we got a piece of sheet metal ( really thin metal) and I threw it towards him I missed on purpose he threw it at me he missed...

then I threw it back and missed again. He joked around and was like " ahhh my neck is bleeding" and security heard and picked up the metal and took us to the dean. We were saying we're friends and we were just messing around. So since it was after school they couldnt hold us there so they are going to deal with it tomorrow morning.

We're thinking of saying it didnt even happen because the security didnt actually see us throwing it and theres no marks or anything.

What do you guys think?
What should we do?
Whats your ideas?

Thanks.

-sir psycho

Tell the truth - they'll know if you were lying, its not hard to tell when people are lying. They will just end up giving you a warning, they wont do much else unless you do it again.

I'm pretty good at it lol

My school doesn't give warnings

yah, just tell the truth!! they might just let you off with a warning

tell him the truth, just say your mates and what can you do? it was after school and we were having a laugh.

if anything, it'll be a detention, so its nothing to worry about

If you lie it will just make it worse - if you sit there and just be honest and nice, they will only give you a warning.

Understand that a thin piece of sheet metal can seriously cut, and if you threw it several times, then you know that a piece can take off at a crazy angle. It could have become very serious.
You have already admitted that you were doing it, so DO NOT LIE about it. Let them know that you realize now how dumb it was, and that you won't do it again, AND THEN if there is some sort of punishment, realize that you brought it on yourselves. Accept it. Hopefully by being honest and contrite, you will avoid suspension.

Good Luck!!