Castration

Wendy knifing Jack’s hand as he’s attacking her through the bathroom, the tied closet doors

the strand of balls as a shadow across the fridge, the pickled, diced, dried produce in the pantry, the history of Kellogg’s cereal.

How Jack refers to Wendy can be inferred to both to Lloyd and his “women, can’t live with em” as well as to Grady, “She (Wendy) interferes)”. Inferring that Wendy’s “control” diminishes Jack’s.

All of this creates a connection to castration.