Board Thread:Episode Discussion/@comment-14138255-20161211174540/@comment-14909251-20161216043402

190.213.244.46 wrote: I don't think that's right.His response was more him showing his understanding of Aura rather that impiling that he used it before.He had no idea what it was and was faking knowlege of it. No, the whole idea is "Do you know that thing everyone experiences sometimes? Well this is what caused it!" People feeling like someone is watching them yet not really knowing there was someone watching is rather common in the real world. A lot of works include magical or sci-fi explanations for that and RWBY is just one more example. The point is it is a reference to something most have either experience or have heard about and that allows both Jaune and the audience to get a basic grasp of Aura.

We can presume he has experienced something like that and isn't just bluffing. Given Pyrrha says this to someone that has no idea what Aura is about, it suggests that many people who do not use Aura in the same active and conscious sense as huntsmen and huntresses do have some unconscious ability to use it. Basically, the idea is that Aura is an untapped latent ability all living creatures in the RWBYverse possess, but only those with training or the proper assistance can fully access.