We did that yesterday, I doubt anybody would fall for it but everybody did.
We was AD 12 players who wanted to have some fun, EP and DC was fighting so we put up this trap along the road.
I protested as I thought anybody would either move well around or keep their distance and call in reinforcements. I wanted a single clanfear or something so it looked like an noob sorcerer sneaking, but majority wanted the nude lady.
I'm glad for it, I laughed so I almost fell off my chair, worse some managed to run into the same trap multiple times, worked until a group whipped us out as we did not changed position.