Self-bondage is a thing. Boys tie themselves up for fun. They set up crazy time-release mechanisms to let themselves out, eventually. In this scene, there's a creative use of a Kitchen Safe key release. To tie yourself up safely, you have a "bondage buddy". That's the person you text to let them know you'll be stuck in case anything goes wrong. If I don't get a second text by a certain time, there's a problem. I'm your emergency contact. So, I got a text, boy saying he'll be tying himself up tonight. I'm about to go for drinks nearby. So I drop by. Total surprise. There's music playing. Shoes off, shhh. I peek in. And document the most mindblowing mindfuck surprise quickie ever. And then, well you'll see.