We have been using PVC pipes for the water circulation throughout the house. The use of traditional metallic pipes is becoming obsolete since the new technology has arrived in the market.
Couple of these Ph.D. students have invented another new and amazing use of these PVC pipes. You will be shocked on their imagination and their thinking level after watching this video. It is hilarious since you do not expect such kind of silly things from people specially who have done Ph.D.