a simile to refer to a large object
the size of the mountain i climbed it was almost the size of jacks head!
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Can be of male or female gender.
One who thinks he/she is super great and attractive and must be idolized. Very selfish. Their head is so humongous that it cannot fit through a doorway. Comes on suddenly. Usually induced by alcohol. Includes a jumbo full teeth smile that is very phony. Lives a lifestyle which includes champagne wishes and caviar dreams on a beer budget. Always overshadows their mate. Is often seen as a family trait.
Can also be a verb: jackheadness
OMG look at that guy that thinks he is so great, he has his Jack Head on
My husband is being a Jack Head
He was talking to that girl with his jackheadness
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when one of your boys is getting a blow job in a car by a woman.
when somebody gets head jacks from that chilly chick.
Giving Oral Sex to Male from Female or Receiving Oral Sex from Female to Male..(Female giving to Male) In other words getting some Dome or Head or Brain.
Man, last night I picked up this chick at the Bar and took her to my car and she gave me Head Jacks.
The other day my ol' lady gave me some Chilly Head Jacks!
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