[Southack]

"She wore the white circuit board on her chest over a black hooded sweat shirt, Pare said at a news conference. The battery-powered rectangular device had nine flashing lights, and Simpson had Play-Doh in her hands, he said."

She knew what she was emulating (i.e. looking like, as opposed to "simulating," which would mean "acting like").

Holding play doh with wires and a circuit board/battery is clearly supposed to convey "bomb."

For her next "art joke" Star Simpson will point her toy rifle at a SWAT team as it responds to a bank robbery...

[1L]

Here’s the image:

http://cache.boston.com/bonzai-fba/Globe_Photo/2007/09/21/1190393922_8553.jpg

It doesn’t look anything like a bomb.

I will, however, give you the play-doh. There wasn’t anything I saw in news reports about that.