Ack. Reality bites, John. Tv Tropes and Idioms defines "Fridge Horror" as, simply put, when something becomes terrifying after the fact.
Fridge Horror
John waved to Sherlock as he left for class. When the young man was gone, John took his apron off and went to Mike in the back room. "He's surprisingly civilized for the nut you've made him out to be."
Mike pulled his phone from his khakis and held it out, revealing a snapshot of a refrigerator. John did a double take and saw a severed head inside.
"Wait, why does that fridge look so...oh Christ, no."
Mike nodded solemnly. John stared at the icebox that they kept their foods in with horror.
"Why?"
"It was convenient for him."
Prompt was #40: khaki
John's probably feeling a little squicky knowing that not only is the fridge used for their supplies, but he's also been keeping his lunch in that fridge.