adj. to be sorry or remorseful for something that wasn't your fault or had nothing to do with you; to say you're sorry when it is unnecessary.
Taken from the main character of the film Wanted, who often said sorry for things he didn't need to be or things that were not his fault.
Jay: You really just made a reference to that "singing shark" guy from YouTube?
L: I'm sorry!
Jay: Don't be Wesley Gibson.