ALL of them. I haven't laughed at a meme once. I think that their audience is in the middle school range because they are extremely immature, cringeworthy, and disgusting. I really hope they go away because they are beyond annoying.
The worst ones have to be "Y U NO", "keep calm", and those stupid black and white faces that look like they have been drawn by a five year old.
Wait i love the perverted sloth