10 Horror Movie Moments You'll Never Be Able To Unsee

After making a name for himself with his audacious short films, Ari Aster knew he had to leave a mark with his studio debut Hereditary, and he certainly achieved that.

Not only is the film incredibly brutal in its depictions of familial trauma and grief, but its displays of violence and gore are similarly hard to stomach. 

Forced by his grieving mother to take his younger sister, Charlie, along to a high-school party, Peter neglects his big-brother duties and allows Charlie to eat some chocolate cake that happens to be filled with nuts; something she's deathly allergic to. With not an EpiPen in sight, Peter bundles Charlie into the car and races to the hospital, all as Charlie struggles to breathe in the backseat. 

Desperate for air, Charlie sticks her head out of the car's window and is promptly greeted by a telephone pole that knocks her head clean off her shoulders. It's a shockingly visceral bit of violence that will stop many viewers in their tracks, but it's arguably the follow-up shot to this, showing Charlie's mangled head swarming with ants, that's the real nightmare fuel.

Very much the definition of once seen, never forgotten.