It’s Bill Murray as Batman!
I guess this is old news, but I missed the memo. Before Christopher Nolan made the dark and gritty Batman reboot, the studio had planned to make a funny, campy version in the spirit of the 1960’s show. They wanted Bill Murrary! Hah, I would definitely enjoy seeing that.
This t-shirt pays tribute to a movie that almost-was. You can pick one up on sale for $18 at PopchartLab.