A masterbater.
Someone with no control over their desire to jack off.
A guy with a high desire to ejaculate.
A male who would rather jack off then go meet women for possible sex.
Boss: "Where's Jeffery?"
Worker: " You meanjism jacking Jeff? He stayed home to jack off today, the fucking pud pounder."
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!