Warning: doing this prank raises your chances of being dumped by about 500%.
The video's author, James Williams, stated in his description, "I don't think I've ever seen a mouth open so wide screaming."
Check out more spoopiness over at Cheezburger's Halloween site!
Paranormal Activity 17, in theaters tomorrow.
Go to the midnight showing and catch the world premiere trailer of Paranormal Activity 18, in theaters the day after tomorrow.
Friends get creeped out by ghost sounds in an abandoned factory