A spider, aka arachnid, is an eight-legged creature of doom. Humans eat eight of them a year in their sleep. Matt Bellamy has stated his wish that gravity on earth were less so that they would all die. Then again, he also said we were derived from them. Not the most reliable source.
"OH MY GOD, IT'S A SPIDER! RUN!"
"Chill out - oh shit, nevermind, let's haul ass."
by Rachel D. August 21, 2007
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Similar to doggy style positiong but involving anal penetration. The guy gets right ontop of the girl with his legs on the inside of hers. Limb order from front: girls arms, guys arms, guys legs, girls legs. This produces the 8-legged effect.

At the point of ejaculation the guy pulls out and cums all over the bed in a wide spray pattern creating a 'web'. The couple then collapse onto it and sleep in the 'web'

Spidering
Ezz: I can't believe we slept in your cum last night
Chris: Thats what happens when you've been spidering, the web was cosy wasn't it!
by Chrisanezz October 30, 2010
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When a guy cums in his hand, and shoves it up the woman's vagina. This is what spiders do when they mate.
Dude: I came before I could get it in, so all she got was a spidering.
by Trevor Aniston March 5, 2008
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Scary senscored bug with eight legs that eats it's own kind or anything that comes in it's path. Builds webs with it's juice inside. eats anythi
Dude that spider just ran across the kitchen floor so I killed it.

What I hate is a spider.

Dude that spider ate another spider that is disgusting.

Dude whenever I get near a spider I can feel how all their sensores are working at me, like they are touching all over me already and I freak out and kill it.
by europopian September 7, 2009
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when one person sits on a toilet and another person sits on top of them in the opposite direction. the two people then proceed to do their business concurrently.
there was only one bathroom and kate and i both had to piss, so we decided to spider.
by rico h March 8, 2009
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When your fisting someone and your hand is in their ass, you spread out your fingers as wide as you can and yell: SPIDER!!!
...and that was the last time I gave someone the spider before cutting my finger nails.
by Horse Cock Jonson April 22, 2005
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A person who has no muscle or fat on their body. Basically just skin and bones.
At the gym today there was an absolute Spider.
by antispider February 5, 2010
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