1) Someone who creates/views/shares so many memes they may momentarily forget they've already seen a certain meme and post it again before realizing the mistake.
2) Someone who creates/views/shares so many memes it defies understanding; how does this person possibly have enough time to do anything, even basic life tasks in a day like sleeping or bathing.
1) Kevin sent me about 20 memes in an hour, and 2 of them were the same. He's either a hypermemiac or that dude has dementia!
2) **insert name here** posts a new meme, on average, every 3 minutes around the clock, seven days a week. Only a hypermemiac + adderall could keep such a crushing pace!