Bathos: Just as the argument between Mildred and Charlie - with some appearances by Robbie - is getting heated, Penelope enters the house, wanting to know where the bathroom is.Bar Brawl: Invoked by Dixon to get a hand on the man's DNA he suspected to be Angela's murderer.It ends up being a taut goodwill parting gesture. Bait-and-Switch: Charlie goes from taunting to apprehensive when he sees Mildred approaching him with a wine bottle, apparently ready to start a fight.Charlie concedes so, but points out that the difference between them is that he's not acting like it will. Mildred retorts that sleeping with a nineteen-year-old isn't going to do so either. At Least I Admit It: When Charlie confronts Mildred over the billboards and her stubborn refusal to take them down, he points out that paying for them won't bring their daughter back or find justice for her.Especially without any other respiratory symptoms, such as regular coughing or shortness of breath. He could have metastases on his lungs, but even then he wouldn't be likely to cough blood. The pancreas is part of the digestive system, not the respiratory system, and the two are not connected. While not wholly impossible, Willoughby would be very unlikely to cough up blood as a symptom of pancreatic cancer.He would also not be discharged from the hospital after a mere couple of weeks - in reality he would require months of treatment and rehabilitation. Somebody with burns as extensive as Dixon's would not be placed in a shared hospital room, due to the very high risk of infection.(Though kneeing two people in the groin at his school is fairly embarrassing.) Amazingly Embarrassing Parents: Mildred is an unusual variation, embarrassing Robbie through her unpopular, unflinching use of the billboards rather than through coddling or public humiliation.
The actors had an age difference of more than three decades. A much bigger example and one commented on in the film would be Charlie and Penelope.