unaware person
The person who hangs out with you that you talk trash about behind their back. When they come over, the person with whom you talk trash with will laugh and say, "unaware person is unaware."
inb4thispostmakespeopleinsecure
inb4thispostmakespeopleinsecure
Douchebag: Hey guys wassup!
Brian: Hey!
Geoffrey: Unaware person is unaware <awesome face>
Brian: Hey!
Geoffrey: Unaware person is unaware <awesome face>