the act of retracting the foreskin of the penis and keeping it retracted all the time so it appears to others to be circumcised; auto circumcision is popular among circumcision fetishists, especially some gays, who believe the circumcised penis is the most attractive; a dude who is auto circumcised looks cut to the casual observer in the locker room but still has his foreskin.
Dude 1: hey, i didnt know you're circumcised.
Dude 2: i'm not, i'm just auto circumcised because i think it looks better.
Dude 3: well, it would have been easier if your parents had just circumcised you at birth.
Dude 2: yah, but they didnt, so i just do a little auto circumcision on myself.