Interesting animation.....but a very lame gag.
This was ok and you animated the mannequins well, each joint and limb animated with perfection. Seeing as you were trying to pull off some sort of comedy - humor-wise, you flunked it.
Perhaps if they started having steamy mannequin "loving" (if you know what i mean) and were caught, that would make me chuckle, but then again, i have a crazy mind like that.
For now though...it gets a 2/5.