okay now i'm not going to rant as i sometimes, well all the time, say weird things and therefore have a tendency to over use the word lol-so people thing i'm kidding
but when people are abreviating things i sometimes don't understand what they mean, and if i don't understand it then how is someone who's first language isn't english supose to?

anyways can anyone tell me what idk or jc means? as i keep seeing them, everywhere