This entire situation.

You look at your girlfriend and say "Honey im sorry but, can you please sit down for this." The air of seriousness with your requests makes her fall silent and give you a concerned look. She goes to the table and pulls out the chair next to yours. Her voice filled with a hesitant concern "Honey whats wrong." You look her in the eye and say "I was fiddling with this app I found, and it started affecting things in real life. Not like an AR game but like literally affecting things." She looks confused by this "How do you mean?" her concerned face starting to let cracks of confusion seep through. You slide the phone down at her the app still open "When I made changes using this app World Pop it suddenly had real world affects, like I changed everyones hair colors and now your boobs are bigger!" She looks at you like you are babbling nonsense "In like the game?" she says. You respond "No no no its not a game but like the real world." You look at her face and see her concern for the situation obviously change to concern for you, she reaches a hand out and puts it on your shoulder and says "honey are you feeling alright?" He other hand going to your for head. God she thinks you are crazy but you know what you did wasn't a delusion it was real there had to be some way to show her, and you look down at your phone.

You put your hand on the phone and slide it to her and say "Honey you gotta trust me, just take the phone and in the change this bar put in 100% of people have red hair." She gives you an odd look and picks up the phone tapping in your request. Odd that you would ask her to change that though, everyone has always had red hair there is no way that could convince her. Yet when she looks back up from the phone at you, her eyes pop wide open and she screams.