One of the most interesting, and erotic, fan contributed artistic additions to the Evangelion universe is the Test Plugsuit, a mysterious prototype version of the normal NERV plugsuit which offers the possibility of visual inspection and debuggery, most notably to Asuka, but also to Mari and Rei…
You can see many fine illustrations of these test units below.
It is not clear just where the meme originates (illustrations on Pixiv quietly started appearing some time ago and only recently became highly popular with several high profile images), but it certainly seems to be gaining the support of many quality artists.
“Can’t you see a bit too much!?”
“You can see too damn much in this thing!”