She gets a spider

A blonde decides to make an experiment.

She gets a spider, and pulls of two legs and tells it to walk.

It walks a few steps, so she removes another two legs and asks it to walk.

It walks a few more steps, so she yanks off another two legs and tells it to walk.

It walks, so she removes the last two legs and tells it to walk.

Nothing happens, so she asks it again to walk.

It doesn’t move so she comes up with a conclusion.

Spiders with no legs are deaf.