a name you would call someone who has done something wicked retahded or someone who is just a douche but in a nicer way or just another greeting when you don't want to call them by their ordinary name.
Yo Jacknutz! Hey Jacknutz! What's up Jacknutz? Where you at Jacknutz? You just spilled your beer on me Jacknutz!
a less offensive term for jackass.something to use when u wanna call someone a name but dont wanna curse
mom:you know jim ur a real jacknut
girl:mommy why r u callin daddy a jacknut
mom:because thats wat he is
dad:(atleast she didnt curse in front of the kid)