In an interview with the Rod Ryan Show on Houston radio station 94.5 The Buzz, Craig Robinson revealed that Jonah Hill improvised asking for a bite of the Milky Way. The other actors improvised the following conversation regarding who gets to eat the Milky Way.
This is no dream! This is really happening!
When Emma Watson is trying to escape the group after overhearing the rape conversation, she hits Seth Rogen in the face with the butt of her ax, breaking his glasses in half. While he wears them with tape around the right temple and hinge for the rest of the film, the glasses clearly broke in half at the bridge, which would require tape on the bridge to hold them together.
There are no opening credits, other than the studio logos and the title.
$20,719,162 16 June 2013