Top Definition
A crazy person.
You see that guy trying to make water flow uphill? He's a real whack job
by Bungalow Bill February 26, 2002
Crazy person. Someone who is nuts or not all there. Comes from the term "whacking off" and literally means the product of a successful round of masturbation.
Mariah Carey is a real whackjob
by Aberfan September 02, 2003
There are a number of definitions to this phrase, two of the commonest being:

1) A person who exhibits abnormal behaviour, this can vary from mild eccentricity to full-blown, froth at the mouth insanity. The degree to which the person is a whack job is usually given by qualifiers to the phrase. Mild eccentricity would be indicated by saying the person was 'a bit of a whack job' stronger symptoms of eccentricity and the person would be 'a proper whack job'. If the person was seriously insane then they would be 'a total, out-and-out, raving whack job'.

2) A professional killing, also known as a hit. The whack part comes from the victim being killed (whacked), the job from the fact that this is done for payment by a professional (it's his or her job).
1) Jackson Galaxy is a bit of a whack job, but he knows a hell of a lot about cats (he's not bad on guitar either).

2) Spanner was found dead in his flat, looks like it was a whack job!
by Croatalin January 09, 2014
1. A Person for whom failure is so consistant that they are slowly driven into madness.

2. Someone who partakes in unbelievably odd behavior that a reasonable human would avoid.

See LaToya Jackson
"Man.. every since billy lost his fast food job for the 12th time he's been acting like a total Wack-job"

"Prisoner #46729675 has been wiping his ass with his hands & not washing them for weeks on end.. What a Wack-job
by Platinum Pistolz June 15, 2004
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.