The pilot reported that he was landing the tail wheel equipped airplane on runway 25 with no wind. His first approach was fast, the airplane bounced on touchdown, and he executed a go-around. On his second approach, the airplane drifted left and touched down left of the runway center line and bounced. Upon its second touchdown, the airplane swerved, and although the pilot attempted to regain control, it departed the left side of the runway and encountered a ditch. The pilot stated that "while current [he] did not have enough recent practice and should have refused PIC [pilot-in-command]."