Dengeki Oshioki Musume Gootaman: Gootaman Tanjou-hen

These series both have extremely scantily clad magical girls, complete with transformation scene and cheesy plotlines.  

Both shows are about under clad masked super-heroines protecting a girl in high school from mobbing and abuse. They came out in the early 1990s and share a similar narrative and artistic style. What little cloth they wear has resemblance, e.g. the feather on their headgear. Gootaman is closer to Mahou Shoujo, Kekko to the superhero genre. Gootaman is shorter, and it's plot could without much problem be made into a Kekkou episode. Kekkou is the more raunchy, zany and better show. 

Both are ecchi parodies of the magical girl genre. 

Both are magical girl parody shows with R+ grade (upper range) ecchi and seriously weird fetishes. The backstories in both are hair-raising nonsense, yet take themselves serious enough to not become random humor. Lingerie Senshi serves multiple fetishes and has the raunchier humor, while Butt Attack Girl focuses on the titular part of the body. Both are trash shows and know it, in my taste Lingeri Senshi is slightly superior due to the more zany humor. Lingerie Senshi has a few more magical girl elements (e.g. a cat familiar), where Gootaman is a little closer to super hero plots.