Batman and Robin: Odd Games. Alternate Title: Role Reversal Can Be Fun!
From Untold Legends of the Batman, by Len Wein, Jim Aparo, Colorist Glynis Wein. I wanted to post Babs' origin as told by Jim Gordon, plus the first meeting of the Commissioner and Batman, but I got distracted by this.
Batman: Does it matter?
Dick: Um, yeah. It kind of matters a lot.
Bruce: No. No it doesn't. End of discussion, pal.
PS: This is weird stuff, but I did really like the rest of the story very much and the writer's last story: Superman/Batman Annual #3. (The one with Composite Superman.)