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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."
by inandaroundyourmouth February 03, 2010
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A person that is both a jackass and a lunatic.
There's no reason why a sane person would ever put mayonnaise in their pockets, he is a certifiable jackaloon.
by gtrslayer284 March 12, 2019
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