Precise etymology, unkown. But thought to be derived from Northern Froth, a 9th Century vernacular tongued in Lochaber and the Western Isles: "Eh, Ken... {thud!}".

A Scottish surname, synonymous with an olive-skinned clan of Norman extraction, whose ancestors headed North to civilise Caledonia after taking Palermo in 1072.

Also an adoptive name or sobriquet given to newly initiated gangmembers in Mexico City, displaying precocisty in the disciplines of taco stand-thieving and male-to-female wrestling.

A Mexican-Spanish byword for virility, male fertility, sexual prowess or legendary laddishness.

A derogatory term, also in Mexican-Spanish, for ladies who look a bit blokey.
On successfully robbing a taco stand/cuckolding a rival gangmember

"Hombre! Estás un verdadero Equenjedo, no?"

"Man! - You're a real Aitkenhead, aren't you?"

On seeing an unfortunately mishapen/cave-drewlling woman

"Eh, tío! - Mirala! - Está un grave Equenjedo allí!"
"Hey, dude! - Check her out! - There's a serious Aitkenhead over there!"
by Belgian Smeg August 17, 2011
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A guy who eats lots of food and then gets a headache immediately after. He also proceeds to walk around his house, classroom, and job flipping his water bottle like a cool guy. When he gets a choice between steak and ginos pizza, he chooses the ginos pizza without any regrets. He also immediately after breakfast has a snack claiming that he is not hungry. When he has his snacks, he has a bag around 20 times bigger than the actual snack. He also gets taught grade 10 math and has his parents check over everything but continues to get 18 and a half. Finally, Aitkenhead is the gayest guy that you will ever find and he has the smallest penis
He is so Aitkenhead with that eating followed by the headache
by AITKENHEAD April 25, 2022
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