There are 4 Invisible walls around you. A ceiling blocks your way out of the top.
How will you escape?
The rules: You can't use material possesions.
You can't walk through it.
The winners will get +1 rep, +2 for second time, up to +5. Good Luck!
Winner list
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Umm....kick a hole in it?
Become invisible yourself.
Best i could get right naw.
Use Clouds head to break through the wall.
I have another idea. He said you can't walk through it, but he didn't say you can't run or jump through it.
You said I have 4 invisible walls around me with a ceiling on top, you never specified that the walls had completely cut me off.
I simply walk around the walls.
(The 4 walls don't connect, there is a gap)
there's no floor...i'll go underneath them :3
id probly strip naked and dance untill someone feels sorry for me and lets me out....
You didn't say there wasn't a door... Therefore I'll just open it, and walk through. =]
Outwit the walls with my amazing logic skills and then leave whilst they're trying to figure out what went wrong

I transform into a bomb and explode myself thus escaping... but also being dead.
Fall through the floor as there is no.
or if this doesn't work because I fall through the ground into the core of the planet and get stuck there
I'll sing the Numa song until the walls explode.
You didn't say there wasn't a door... Therefore I'll just open it, and walk through. =]
I was going to say that, but I fell asleep... >=\
Walk through the invisible door. 
*gets his spoon out*
Just dig through the bottom.

you all got it. Nice work!
Now it gets tougher...
The door is completely barred off.
There are no gaps.
If you explode, you lose.
If you bash the wall with clouds head till it breaks, you lose (there now cloud has no more concussions)
so yeah, good luck everyone.
(lots of rep going out now.)
Buuuuut!
DD:
You didn't say there was a window.
I just go out the window.
(yes rickeh, I took your idea.)
and you never said what the floor is like
so i' mguessing the floor is made out of some sort of material i can telepathically move with my mind
i dig a pathway with my mind and done
i'm out
grr... u guys are good. I'll rep you asap, right now i gotta get ready for work.