A person that is too old to be doing what they're doing. Usually refers to a gray haired man that is doing manual labor, and takes way too long to finish.
Can sometimes refer to a 35 yr. old that awkwardly tries to hang with the 20 yr. old college crowd.
Man, did you see how fucken SLOW Oldie McMoldy was moving those boxes in the warehouse?
I saw Oldie McMoldy peddling his bike down the street. That guy was going so slow that he actually went backwards!!
Oldie McMoldy was hitting on those hot college girls and all they did was laugh at his beer gut and balding head! HA!