A realm is a human being that's existence in life is to be pointless, annoying and simple. There is often a realm in every friendship group who's sole purpose is to amuse there fellow human beings by being so silly. To describe a group of them, the word "realmites" is extremely appropriate.
A realm can be distinguished by: mimicry, lame jokes, dumbness, making others angry for their pleasure,
by Sabine March 02, 2013