I don't know if this is true but it makes a for a clever story nonetheless ...
Soldiers in Iraq are using Silly String to detect bombs. The string is sprayed into the air, and if it falls to the ground, all is well. If it hangs in the air, it's caught on a trip wire, that is otherwise mostly invisible to the naked eye.
.
Order your own silly string bomb detection kit today. [no, I don't get anything for saying these things, but I am happy to receive any extra unused silly string bomb-detection kits that you might have laying around so I too, can help out with the war effort at home and overseas]
I've suddenly become very worried about teh possibility of booby traps at the Christmas parties I'll be attending this year. However, my mind is now at test, as I have a remedy.
Thank you GrrlScientist for this public service!
Bob