Another meaning for spirit level:

The noise the fans make at a bowl game :)

By the way, I KNEW it was you, WYSIWYG, who tooted! I just couldn't point the finger at the time because everyone knows that it's usually the person who points the finger that really did it...

Also, I would advise not to "pull" the finger either...

--Wise words indeed from SunnySister who had a brother full of gas!