Top Definition
The theory that how you treat spiders affects how they treat you.
Jane: OMG I have so many spiders in my house these days. This morning I woke up with one in my hair and then a massive hairy one dropped into my cereal. I have to move.
Lesley: You must have bad spider karma. What did you do?
Jane: Umm... I used to use hairspray and a lighter on them. I didn't know any better.
Lesley: Harsh. You deserve it.
by spideykiller August 20, 2009

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The little doubt in your mind that one day, a huge mutant spider will come after you and make you pay for all the spiders you have squished over the years. Manifests itself as a brief pang of guilt every time you swat an arachnid.
(*squish*) Hmmm... I have the bizarre notion that will come back to haunt me... must be the spider karma.
by ed pluribus unum June 18, 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