This picture is mildly interesting because instead of immediately collapsing into one rut, your brain hangs suspended between a rabbit rut and a duck rut. We nod and call this Ambiguity. But unless you Sit Down And Think About It For Five Minutes, you’re not going to notice that it could be a hairdryer that has been split open, let alone an erotic BDSM picture of a clothespin attached to a female breast. Maybe if you caught it right out of the corner of your eye, without time to think, or if it was disguised by visual noise, you would notice one of the latter two immediately – at the cost of not being able to see the duck or rabbit.