When you're taking a shower, it might be easy to get distracted—getting clean is the best time to imagine yourself as a superhero, or winning an argument that happened a week ago. But while you're daydreaming, you're wasting a lot of water.

London-based designer Elisabeth Buecher has created just the wake-up call you need to get out of the shower in a timely fashion. She made a shower curtain covered in spikes that inflate when it's time to go dry off. The artist calls it a “design for pain and for our own good.”

The spiky shower curtain is part of a line called “My Shower Curtain is a Green Warrior.” Each curtain has a feature that abruptly punishes the showerer for staying in too long. Another design from the line is called "Trap" and inflates around the person showering after 4 minutes, trapping them. While these are not actually for sale, it does get us thinking about water consumption.

“These curtains are not really for marketing but aim at provoking a debate around water issues,” Buecher said. “If you don’t want to get trapped you have to get out before it does and stop damaging the environment.”

[h/t: Inhabitat, Mochi Mag]