When you take a number 2 on someone's chest and you then cut your pubes off on it to make the residue resemble a new species of arachnid.
"Wow that was the biggest hairy spider I have seen ever"
by Austin42g March 29, 2010
1 more definition
A girl with Hairy Nipples.
That chick was really hot, but what a turn-off when I saw those dirty hairy spiders.
by FLD June 01, 2007