Top Definition
An all-knowing, invincible cactus with a serious attitude problem. Whenever it dances, small annoying children are thrown into an interdimensional time portal and are ripped apart halfway through. Then it hangs out in front of Denny's, pissing people off because it's such an ass. Then it dances some more.
"Mad Cactus!? MAD CACTUS!! MAD CACTUS AGGHGHGGH!! MY BODY!!"
by RustyD February 19, 2005

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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A hairy shaft
Damn, I went home with him last night, but his dick had so much hair...it was a mad cactus!
by poopyheadmeanyface November 03, 2011

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt