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4.
One who is doesn't care to think things through or plan ahead.
A vacuous individual, a mental couch potato.
What a potato head, he didn't even bother to check and see if there was enough gas in the car before we left.
by Panthera Atrox February 17, 2011
 
1.
A complete numpty who is too stupid and inept to realise just how stupid and inept he really is. Also thinks he's a bit clever - usually a bit of a slap-head as well...
That Ian Duncan-Smith, bit of a potatohead i'nt he?
by monk September 08, 2003
 
2.
Anyone who embodies the stereotypical variations (i.e. big head, slanty eyes, below average member size) characteristic of the asiatic races.
Whoa! Look at that F.O.B. smoke his cigarette. He looks like a smoking potatohead!
by BJC December 01, 2003
 
3.
A potatohead (abreviation: KK, from german "Kartoffelkopf") is a human with a potato-shaped head. However, the potato shape of the head is not disadvantageous to his / her prettiness, but rather an unique feature of the respective human's beauty.

A potatohead is usually owned by a potatoheadowner (abreviation KKB from german "kartoffelkopfbesitzer"), who normally is a male person, as women usually rather match the criteria of a KK.
Sarah is an example of a perfect potatohead
by kartofelkopfbesitzer May 17, 2011
 
5.
Someone with a head that looks uncannily like a potato.
'That Jimbo lad, he's such a potato headed berk!'
by The Hedgehog Man September 18, 2008
 
6.
A Latin American person of indigenous descent, typically with a round potato shaped head.
I took a trip to La Paz, Bolivia and man...there were Potatoheads everywhere.
by Yuccaface January 04, 2012
 
7.
Racial slur referring to anyone of Irish descent (esp. males)
Get back to work you potato heads!
by S. O'Brien March 05, 2007