Awkward

That awkward moment when think you know what the other people around you are talking about but come to find out you are totally wrong.

Example:

person #1: what the heck was all that about last night?

you: yeah dude your mom was a total bitch

person #1: umm we were acctually talking about Jersy Shore!!

you: ohhhhh

person #1: asshole (under breath) *as they role their eyes*