A derivation from the expression "that's what she said" but used as a reference to porn movies that typically depict normal conversation followed by abrupt sex after some type of sly or cheesy comment.
May be abbreviated CTB on the internet (in forums, blogs, etc.)
Rick: This amusement park has been great.
Jane: Yeah! I've had so much on all the rides...and with you.
Bystander: Just cut to the boobs.
*abrupt sex scene in random bedroom*
Terry: You're really good at math.
Emily: That's not the only thing I'm good at.
Bystander: Seriously, just cut to the boobs.
*abrupt sex scene*