Nurse Redheart, occasionally called Nurse Joy is a forced meme that took a single template of an angry Nurse Redheart and had text that was also of an angry origin. It's main attraction was the normally nice demeanor of a nurse pony turned ironically harsh. Also because it was completely annoying.
It started on /oat/ sometime in mid-2012 and was scarcely seen anywhere else other than its original thread. Many participated in making the longest, cheesiest and worst possible forcing of a meme in a single thread. The fun was in the act and there was nothing after.
While there are no template variations, there are several references to various video games, cultural norms, and other things of that nature. Examples include Nurse Joy (from pokemon) and wearing hipster glasses.