What's the deal with "That's what she said"? What does it mean?

Question

What's the deal with "That's what she said"? What does it mean?

Answer 1

michaels joke on the office.

something that was said that sounds innuendo.

Answer 2

it means there was some sort of innuendo in it... =S

Answer 3

it is an expression said after a normal statement to make it sound perverted. For example, if someone was holding a baseball bat and said "wow it is so long and hard!" then someone else might say "that's what she said," thus making the long and hard refer to....something else. Get it?