It could be that in his relationship with you, Vod, Bruno was like one of those grandpas who could not remember the names of all of his grandchildren, and when he could not remember the name, he would just call them "bud." I hate to be the one to break the news to you.
It's OK - it was a joke that went over your head.

That's how I am going to remember him - friendly with most jokes over my head.