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5.
n.

Someone who is silly, zany, goofy, or just plain nuts. Generally used in an affectionate manner.
Bobby intentionally wore his shirt inside out today. He's such a nut bunny!
by Lina Blade June 14, 2004
 
1.
an interjection of consternation or disappointment, popularized by the titular character on the 1990s cartoon series Freakazoid!
Doctor: Sir, I'm afraid you have just two weeks to live.
Patient: Aw, nut bunnies.
by Rofang July 18, 2008
 
2.
An expression of general frustration first used in WB's Freakazoid cartoon.
"Aw, nutbunnies!" the boy exclaimed as his computer crashed.
by Otaku Guardian January 31, 2005
 
3.
an interjection of consternation or disappointment, popularized by the titular character on the 1990s cartoon series Freakazoid!
Doctor: Sir, I'm afraid you have just two weeks to live.
Patient: Aw, nut bunnies.

UrbanDictionary User: Nut bunnies! My submission is STILL under review?!
by Rofang July 30, 2008
 
4.
Most often used in the plural (nutbunnies), nutbunny implies:

Noun:
1. Someone who is foolish or immature.
2. A rabbit who enjoys eating nuts.
3. Used to describe someone who is contravening a direct order.

Exclamation:
Can be used as a substitute for expletives.
1. "I can't believe Billy laughed at that sophomoric joke. What a nutbunny."

2. "Joe's pet rabbit sure loves those cashews. By George, he is quite the nutbunny."

3. "Hey, you kids get out of the pumpkin patch! What a bunch of nutbunnies!"

Exclamation: "Damn it, I missed the bus. Nutbunnies!"
by Wheatmaster Fen-Fen October 13, 2007
 
6.
Squirrel or any kind of rodent who eats nuts
The little nut bunny was running around gathering nuts for winter.

Most commonly used in exclamations "Holly Nut Bunnies !!"
by Charles Meets Standards February 14, 2008
 
7.
Usually used as an ending "swear word."

(alternative meanings include)

Actual nut rabbits O_o
Testicles -_-
"Awww, nut bunnies!" (reference to YouTube "Kingdom Hearts Stupid Files"
by Zakk B. June 17, 2007