a publicly acceptable way of calling someone a jackass. someone who recently has done something stupid and deserves to be called a jackass, but there are people around that wouldn't appreciate that and so you simply call them a jackaloon.
"Dude what's wrong with your toaster?" "You have to plug it in first you jackaloon."
Did you hear Reggie Miller pronounce Rasheed Wallace's name as RAW-sheed? Then he tried once again to claim that Tayshaun Prince's block on him in the 2004 playoffs was goaltending!
Used to describe an amazingly cool person in the south of England but refers to a moronic retard in the North, Wales and Scotland. Can be used to mean beer in Ireland and in most places of the UK
Person 1: How's your time in Manchester ?
Person 2: Fine apart from my new room mate is a complete jackalaka
Person 1: Thats a shame. Maybe you should throw him out the window whilst you sleep Person 2: That's a bit mean. He isn't that bad a jackalaka unlike my classmate Jack.