Ben Affleck [1] is making the rounds to promote Batman v Superman: Dawn of Justice before its release this week, and during a recent appearance on The Graham Norton Show with costars Amy Adams [2] and Henry Cavill, the actor talked about his 4-year-old son, Samuel, and how he thinks his dad is "the real Batman." After telling a supercute story about Sam thinking the FedEx delivery guy is actually The Joker, Ben went on to describe the great lengths he went to to ensure that his little one's recent birthday party was as realistic as possible — hint: it involves Ben in his Batman costume, sweating bullets in front of a bunch of parents. Watch the video above now, then read Ben's quotes about "supermom" Jennifer Garner [3].