Is it okay to use ain't in formal conversation? I know ain't can be used for am not, is not, are not, have not, has not. So if I can use it in day-to-day life, it will be easier for me I guess.
Does anybody have any conjectures as to why this quirk is so common? For an example, see this TED talk by Kevin Slavin.
So, I was like, why does everyone say like and so in every sentence? Where did this trend come from, like, what started it, and is it actually grammatically correct to like, insert like into our ...