Overview
This tag refers to illustrations where someone's buttocks are disproportionately large compared to the rest of their body, to a similar extent as with "Extra Large Breasts" and "Extra Large Penis".
Minimum size is somewhat subjective, but generally significantly larger than is the norm for any other tag.
This tag is related to other tags with "超___" ("extra large ___") in the tag, each related to different oversized body parts.