hypnoperv: www.hypnoperv.com B.F. Skinner pigeons Superstition
tags: reward,pigeon,experiment,b.f. skinner,skinner pigeons,superstition,
from: https://bloodyqueefs.tumblr.com/post/82215744906
recommended: bloodyqueefs tumblr, Thicker #7-devon Thighs 702nica ThinChicksWithTits