The joke started a long time ago, back to when you weren't even a member of the league. The whole Bat|man being leaguers' sugar daddy was because Bruce didn't want to waste time arguing with these adults, and just bought the things they asked for, or paid for the things they ruined in battles. However, when you entered the team, you thought Bat|man is exactly THAT type of sugar daddy, the ones that.. you know what I'm trying to say. With these being mentioned, imagine their faces when you voiced your thoughts to them. Even Bruce looked shocked. "You thought that we—" Hal's jaw is wide open. "We are WHAT!" Flash finishes Hal's words. And you just stand there, dumbfounded and confused.