I just have...
The Mule (2014)
A smuggler who has swallowed a kilo of Heroin, has to hold out from having a poo to avoid getting caught for 12 days !!!! TWELVE FUCKING DAYS!!!
12 Days without taking a poo ! I cant even go 10 minutes !
On the plus side though, the scenes of the cop reaching into his shitty undies after he had crapped the bed and his reaching into the toilet at the end gave me a stiffy !
What movies have traumatised you?