An invasive and aggressive act in which one uses his or her fingers to probe the anus of another in a way that mirrors the scooping of the last remnants of peanut butter from the bottom of the jar.
"Why are you crying?"
"My doctor went all peanut butter status during my prostate exam"
"Chunky or Smooth."
"It felt like he had giantism in his hands."
"Ahh, so chunky."