10 Horror Movie Facts That Will Blow Your Mind

The making of The Texas Chainsaw Massacre sounds about as hellish as the final movie, with multiple endurance tests set out for the actors as they pulled together a lasting piece of horror cinema. If it wasn't the intense Texan heat, it was a pile of real dead animals stinking up the set and causing everyone to vomit between takes - but one of the more intense moments comes from Marylin Burns's commitment to the role whilst suffering through a combination of the two.

Exhausted, ill, and overheating, the chainsaw-wielding Gunnar Hansen attacks final girl Marylin Burns in the dinner table scene, but couldn't get the fake blood prop to work at the time. Instead, Burns allowed Hansen to actually cut her finger so that they could get the most authentic take - letting Grandpa suck on her sliced open digit for real so she could get the whole shoot over and done with, probably. Sounds like a health and safety hazard there.