One who thrives on popular fads of the moment and constantly seeks the approval of others (sometimes in the calculable form of "Karma") by proving their knowledge and acceptance of these fads.
That memester showed me yet another picture of some grumpy cat on reddit.
A person who lives his or her life immersed in popular culture. The opposite of a hipster, the memester embraces and celebrates that which is mainstream. Funky glasses are optional. Derived from the word meme, or unit of culture.
Did you hear that new girl at work talking about the Foul Bachelor Frog? She's such a memester!