I have it...I have 100%. You can also unlock it in DA, but you have to be patient - just like you have to be in the Shop.
Peter (when he's hungover): This sucks worse than that time I went to that museum. (Flashback to childhood, standing in front of dinosaur skeletons.)
Peter (as a child): Why did all the dinosaurs die?
Man at Museum: Because you touch yourself at night.