He looks old , but he claims to be only 31 years old , ( in 1993 's `` Selma 's Choice '' , his driver 's license says he was born August 2 , 1961 , and in `` Duffless '' , Moleman confessed his real age at an Alcoholics Anonymous meeting , implying that his ugly appearance has been caused by severe alcoholism ) but Moleman was in the Springfield Retirement Home in Season 10 's `` The Old Man and the `` C '' Student '' . In the episode Little Girl in the Big Ten in season 13 , he said he was eighty years old . Although apparently elderly , he claims to be only 31 years old ( in 1993 's `` Selma 's Choice '' , his driver 's license says he was born August 2 , 1961 , and in `` Duffless '' , Moleman confessed his real age at an Alcoholics Anonymous meeting , implying that his grotesque appearance has been caused by severe alcoholism ) , though Moleman has been seen at the Springfield Retirement Home on season ten 's `` The Old Man and the `` C '' Student '' and in the season 13 episode Little Girl in the Big Ten , He has cataracts and is almost entirely blind ( which has severely impaired his reading ability and has led to repeated revokings of his driver 's license ) , and has used medical marijuana .