1 : negative term from outsiders for one who creates or perpetuates memes; commonly referred to as "filthy" or "dirty"
2 : positive term from those who classify themselves and others within their circle of acquaintances as upstanding or exceptional contributors to "meme society"; commonly used within social media, especially on tumblr.com. Often associated with becoming a meme in ones entirety.
During our memersation last night, his This-is-Sparta! response to my Lolcat set me upperfectly to send Morphius What-if-I-told-you, which I know he loved because he quickly replied with baby-fist-pump.