To highlight one's closeness to a famous person who recently died by loudly proclaiming how close you were with them and how much their passing affects you, all under the guise of a eulogy. Can be strengthened through the use of personal stories, photos, or nicknames.
John: It's so terrible that Johnny died, we were so close and I'll never recover from this.
Alice: You mean that famous billionaire that you met once at a conference 5 years ago?
That's guy's facebook post is a complete eulogy brag, he barely knew that famous person who just died and now he's acting like they were the closest friends ever and is so hurt by his passing.