An event invitation sent to someone solely for the reason that one feels obligated to do so.
For example, there are three roommates and you know two of them well. You may not know the third person as well as the other two--or you just don't like them--yet you feel obligated to invite that person too so things won't get awkward.
when a person brings up an event or happening and follows it with a statement about why a person would not like it or want to go.
I'm going to this party this weekend but there will be freshman there so you probably wouldn't like it.
or
I knew it was a non-invite when she brought it up then told me immediately afterward I wouldnt like it because I wouldnt like the music.