How does plumber's friend work?

A plumber's friend, also known as a plunger, is a tool designed to clear clogs in drains and toilets. It features a rubber suction cup at the end of a long handle. When pressed down and pulled up, the suction cup creates a vacuum that dislodges blockages by forcing air and water through the pipe, helping to break up or move the obstruction. Effective use involves ensuring a tight seal over the drain and using firm, consistent thrusts to generate the necessary pressure.