Posers. I don't really care if a friend of mine is a poser. Ofc at first i'll wonder why s/he did it but that's all. Why would I ruin our friendship for the ONE thing s/he did wrong and not stay for ALL the right things s/he did? If a face is all you care about then you prolly don't offer genuine friendship. Anyway my only guess about posers is that they're only doing it for the lulz. Even if s/he's not a friend and just someone I know, i don't really care as long as s/he's harmless and fun to be with.