Sounds like Barney felt you weren't showing him the respect and reverence he is used to and feels he deserves.
That's what it boils down to for many of these guys they want people to grovel to them and defer to them for divine guidance if they deel theybare higher up on the totem pole than you.
They hate it when you treat them like a regular guy.
My COBE was a dead ringer for Waldo/Wally from Where's Wally.
I told him that once in a joking manner and the look on his face was " how daaarre yoouu!!"
I thought, get over yourself mate, you're only a legend in your own lunchtime.