We all have this bad habit of leaving our empty bottles of shampoo and soap inside the shower, months after we have finished them. This guy was complaining to his girlfriend to take out her empty products from the shower, since they take too much space, with no avail. Finally, he decided to do it himself, and let her know how he feels about it.
He duct-taped her bottles to the wall, as a way of sending her a message. This is certainly petty, but it doesn’t seem like much of a revenge, because at the end of the day, it probably took him a lot more time to tape them to the wall than it would take his girlfriend to get them down, and so it’s not much of a punishment. She’ll probably just have a laugh about it and roll her eyes.